digging 

52279
单词释义
v.掘(地),凿(洞),挖(土),掘得,(采)掘出,寻找,搜寻(物品)
n.挖苦;(用手指或肘部)轻碰;嘲讽;考古发掘;挖掘地点;挖苦;一挖;一戳
dig的现在分词
词根词缀记忆/谐音联想记忆 补充/纠错
谐音di(地)+ g(瓜) → 挖地瓜 → dig v. …………
其他怎么记补充/纠错
谐音记忆“低沟” → 沟是比较低的,地沟是工人挖掘出来的 → 挖、掘 → dig v.挖,掘;刺;搜寻 n.戳,捅 …………
词性拓展记忆 / 词形拓展记忆
原形:dig第三人称单数:digs过去式:dug过去分词:dug现在分词:digging
对比记忆 / 类比记忆 / 形近词记忆
串记记忆
pig / dig / pit / big / pigeon
The pig is obliged to dig a big pit for the pigeon.
猪被迫为鸽子掘一个大坑.
 …………
词组和短语补充/纠错
dig a hole 挖坑
dig in 掘土以掺进;掘土把…埋起来
dig up 挖出;掘起;开垦;发现
dig out 发掘出;找出
dig sth over 翻挖土地;重新考虑
dig one's own grave 自掘坟墓;自取灭亡
dig at sb 挖苦某人
dig sth up 挖掘(泥土等);找出(情报等);透露某事
dig one's heels/toes in固执己见;寸步不让
dig out 挖掘,挖掘
dig up 挖掘,挖掘
sb. is digging one's own graves 某人正在自掘坟墓
dig down 向下挖掘
dig into 深入了解
dig in 挖掘,挖掘
gum digging 挖口香糖
dig a trench 挖壕沟
dig something up 挖点东西
take a dig at sb. 挖苦某人
take digs at sb. 嘲笑某人
dig into sth. 深入研究某事
dig ... up 挖掘
to dig a well 挖一口井
dig ... out 挖…挖出来
dig a well 挖一口井
单词例句
He dug a hole.
他挖了一个洞。
Are you digging at me?
你在挖苦我么?
Can you dig the material out of the archives?
你能从档案中找出这份资料吗?
I'll dig some potatoes for lunch.
我要挖点土豆作午餐。
I dig for the facts.
我挖掘事实。
For Mary Kay Inc, a United States-based beauty major that has been in China for almost three decades, China is not only a market to dig for growth, but is also a key platform to mull a bigger market presence globally.
对于在中国经营了近三十年的美国美容专业企业玫琳凯公司来说,中国不仅是一个需要挖掘增长的市场,也是一个考虑在全球扩大市场份额的关键平台。
"To my understanding, the products must be researched and developed based on people's needs; in the meantime, there must be constant efforts made in digging deep into cultural resources," Shan Jixiang, former director of the Palace Museum, told the Beijing News.
故宫博物院前馆长单吉祥在接受《新京报》采访时表示:“据我所知,这些产品必须根据人们的需求进行研发;与此同时,必须不断深入挖掘文化资源。”。
The lab offered us an ecology with a rich industrial foundation, where we could really dig into the R&D and follow-up procedures of our project.
该实验室为我们提供了一个具有丰富工业基础的生态学,在那里我们可以真正深入研究我们项目的研发和后续程序。
"Digging through the 1,353-meter-long tunnel is indeed a great success for us," said Qin Bing, a project manager with CR24.
CR24的项目经理秦兵说:“挖掘1353米长的隧道对我们来说确实是一个巨大的成功。”。
Improving livelihoodsIn many rural districts across Zimbabwe, engineering and construction company China Jiangxi Corp in collaboration with China Aid, the international aid agency of the Chinese government, have helped local communities by digging for water.
改善生活在津巴布韦的许多农村地区,工程和建筑公司中国江西公司与中国政府的国际援助机构中国援助组织合作,通过挖掘水源帮助当地社区。
We are bullish about the Chinese market and will continue to further dig into the market in the future," Leng said.
In the future, we will further dig into the market, so that Chinese consumers are able to have healthy skin in the long run," Choe said.
We needed to dig into the essence of the company by focusing on consumer demands, in order to accelerate our 'Customers, Products and Channels' reform to achieve a consumer orientation by enhancing our product power, brand power and retail power. "
You have to dig deep as how to improve," said the Chinese entrepreneur.
Ju Weimin, vice-chairman and president of the CIC, said the company will continue along this path and dig further into new investment opportunities brought by the Belt and Road Initiative, exploring third-party market cooperation under the framework of BRI.
It is the right time to dig into data, with technologies available and a strong demand for innovative applications and big data analysis, said Wang Dong, president of technology firm Beijing Egova Co Ltd on Tuesday.
Sixty years ago, a group of the then Soviet experts arrived in Beijing to help dig the first metro railway in China.
"Apart from the EV sector, Gu also said he thinks there is much potential to dig in the country's market for industrial robots.
The project began its digging work in Ramat Gan, a district in Tel Aviv, in February 2017.
"Digging the spirit of different cities and finding the project that fits in - that's what we want to do," she said.
PetroChina Southwest Oil and Gasfield Co said it applied new technologies to dig the first well in the volcanic stratum area, increasing the drilling speed and reducing blockage of the gas storage layer.
That is to say, when big data and artificial intelligence technologies are applied, it is easier to dig up such content," said Li.
The company will take action by working closely with academia and using big data to dig into consumers' breakfast behavior.
"Apart from its global vision, Jiangxiaobai aims to dig deeper into the youth market.
"The 118-meter-tall Blue Whale 1 oil exploration platform is able to reach the seabed 3,658 meters below the surface and dig a record-breaking 15,250 meters into the seabed," said Wang Jianzhong, president of CIMC Raffles.
"We dig value out of efficiency, to offer market average prices or even lower prices, with quality surpassing the market standard.
According to Song Heng, deputy publicity chief of CREC4, besides helping cultivate local talent, CREC4 staffers have volunteered to dig wells and repair roads for local villagers, and donated cash to help children with their education.
Most companies still consider China as a critical part in their future strategic development plans with 75 of the participating companies plan to reinvest in China in 2023, including 68 percent of American companies that are determined to dig deeper into the Chinese market.
She called on Guangxi and Australia to deepen mutually beneficial cooperation and dig deep into business opportunities brought by the RCEP.
Digging through the tunnel was faced with several challenges, including a maximum burial depth of 496.2 meters, fragmented rock formations, fault zones and other complex geological conditions.
In Zhejiang province, another rail project partially undertaken by CR24 — the Jinhua-Jiande High-speed Railway — also reported a big leap forward, as the builders managed to dig through both lanes of the Mache Tunnel on the railway.
Around 75 percent plan to reinvest in China in 2023, including 68 percent of US companies that are determined to dig deeper into the Chinese market.
We must dig deep into the causes of fragmentation, promote positive-sum games, identify the possible converging areas of cooperation, and explore the mechanisms for doing so," he said.
The economic slowdown and COVID-19-related restrictions have weighed on local companies' financial fundamentals, but there are still opportunities for investors to seek excess returns if they dig deeper.
Though starting in June there have been signs of a recovery, indicating that growth in the second half may pick up significantly, it's better that we again review first-half performance and dig out key structural factors behind those unexpected woes such as the Russia-Ukraine conflict and COVID-19 resurgences nationwide.
Digging a bit deeper, the advantages of the whole industrial chain accumulated in the nation for a long time and have played an important role.
"Digging through the 1,353-meter tunnel is indeed a great success for us," said Qin Bing, a project manager with CR24.
CTCE builders needed to dig 5.53 million sq m of earth, handle backfilling earthwork of 3.36 million sq m, pour 1.22 million sq m of concrete and use 160,000 metric tons of rebar and 620,000 meters of Larsen SP-IVw steel sheet piles.
To increase global influence, Asian brands need to dig deeper into the market and identify potential market gaps to position the brands properly.
Underscoring the city's historical and cultural features, the plan notes that Shanghai will dig deep into its urban tourism resources.
Digging deeper into the issue, you will learn the very marketing of blind boxes is called probabilistic selling.
How to ensure a relatively fair transformation, so as not to bring too much shock to social stability, is also a research topic we should dig into," he said.
"With the smooth transfer of the new line, the digging of the waterway will start soon, and it helps complete the water diversion project on time," he said.
It was built amid harsh geological conditions and very high risks in digging and construction, said Ma Zhikui, project department manager.
Since first entering the region in March 2018 for preparation, CTCE started digging the tunnel in June 2018, intending to make it a transport artery in China's northwestern region, Ma said.
"These companies have obtained recognition and support from the government, local authorities and people of Cambodia," he said, adding that these Chinese companies, besides digging wells and constructing roads, have donated medical products to rural families and teaching materials to rural schools during the COVID-19 pandemic.
By using a giant machine measuring 15.03 meters in diameter and 135 meters long and weighing 4,000 metric tons, the company said its excavation work has entered the critical period of the project, as it will dig toward the deepest point within the rock and soil parts underneath the Yangtze River.
"We should dig out stories that connect with grassroots groups, show the extraordinary values of ordinary life and cheer for the positive state of ordinary people.
For beginners, the process of digging mushrooms is much more rewarding than the mushrooms themselves.
The second route is for local and high-end customers, and includes a mushroom hunting experience (mainly edible mushrooms such as lurid bolete, tricholoma matsutake, boletus edulis), digging for polygonatum, picking wild tea, enjoying a mushroom feast on a farm, and visiting a local wild mushroom market.
The fast-growing market has prompted battery producers to dig deeper into materials and structures, pushing China's power battery sector to the forefront globally, said Wu Kai, chief scientist with Chinese battery producer Contemporary Amperex Technology Co Ltd. With policy support and market-driven innovation, China has put in place a relatively complete NEV industrial chain, covering batteries, motors, electronic controls, and vehicle manufacturing and sales.
Li Xiangfeng, a project manager with China Railway 15th Bureau Group Corp, also a CRCC unit, said its construction workers are making steady steps in digging the 12.15-kilometer Huayingshan Tunnel — a high-level risk-controlling tunnel with complex and unique geological features.
Then, supported by high-accuracy scanning equipment, the teams started tunneling, step-by-step, and managed to finish digging the Jinyuding tunnel," the manager said.
Deemed a barometer of the vitality of infrastructure development, sales of digging machines are usually backed by growth in mining and infrastructure construction.
The Henan Museum in Zhengzhou, meanwhile, released cultural and innovative products such as "mystery boxes of archaeology" that offer people the excitement of an archaeological dig and help them learn more about history.
Sales of digging machines are a significant indicator of the vitality of an economy as demand is usually backed by growth in mining and infrastructure development.
Sales of digging machines are an important indicator of the vitality of an economy as the demand is usually backed by growth in mining and infrastructure development.
Offshore wind power is expected to account for 10 percent of total power generation in 2050, and 70 percent of the technical potential is in deeper waters suited to wind farms floating on the ocean surface rather than digging down to the ocean bed, said Dolf Gielen, director of the International Renewable Energy Agency Innovation and Technology Centre.
Offshore wind power is expected to account for 10 percent of total power generation in 2050, and 70 percent of the technical potential is in deeper waters suited to wind farms floating on the ocean surface rather than digging into the ocean bed, said Dolf Gielen, director of the International Renewable Energy Agency Innovation and Technology Center.
In the first quarter, China's top 26 excavator makers sold a total of 126,941 digging machines, up 85 percent year-on-year, said the China Construction Machinery Association.
In the first quarter, the country's 26 leading excavator makers exported a total of 13,376 digging machines, surging 81.9 percent year-on-year, the CCMA said.
While the global market faces mounting pressure of coronavirus-induced recession, overseas sales of the company's digging machines bucked the downward trend by gaining over 50 percent year-on-year in developed overseas markets.
Sales of digging machines are an important indicator of the vitality of an economy as demand is usually backed by growth in mining and infrastructure development.
In the first quarter, China's 26 leading excavator makers sold a total of 126,941 digging machines, up 85 percent year on year, data from the China Construction Machinery Association showed.
While digging into the domestic market, Chinese excavators have been seeking a stronger global presence.
In the first quarter, the country's 26 leading excavator makers exported a total of 13,376 digging machines, surging 81.9 percent year-on-year, CCMA data showed.
While the global market faces mounting pressure of coronavirus-induced recession, overseas sales of the company's digging machines bucked the downward trend by gaining over 50 percent year-on-year in high-end overseas markets.
"To cope with change, Lepu Medical decided to dig deeper into the field, improve its products and enhance R&D, to bring advanced products and services to patients at reasonable prices.
Just like in dealing with water, you may dig the canal deeper, or you may widen the canal, or explore new canals altogether.
But as I dig deeper into the matter, it's all about the archaeology, history and culture of China," Huang said.
"The little guys eclipse their hulking counterparts in terms of orchard maintenance, ditch digging and house renovation.
You Hao, who runs an orchard of about three hectares in the city of Ganzhou, East China's Jiangxi province, now uses the mini machinery to dig ditches and furrows of manure.
"As safety functions of major infrastructure and environment are indispensable to ensure the safety of cities, Chen suggested that cities should further upgrade themselves and dig for more growth potential in their underground spaces, as well as improve fire-fighting technologies and related equipment to facilitate these moves.
Slag waste produced from tunneling and well digging will be transported to the dumping point using river transportation, in order to achieve green construction.
Robust sales of the digging machine came on the back of special local government bonds issuance, which puts a focus on infrastructure construction, Sinolink Securities said in a research note.
Cui Dongshu, secretary-general of the association, said carmakers can seize the moment and dig even deeper into the segment, offering vehicles equipped with lights and other necessities for street stalls.
Excavator sales are usually seen as an indicator for economic vitality, because demand for the digging machines is associated with property and infrastructure development.
Practitioners and experts in the insurance sector called for an industry-wide promotion of customer-centric family insurance accounts, which would drive insurers to dig further into the value of existing customers based on data analytics.
Sales of digging machines are an indicator of the vitality of an economy as demand is usually backed by growth in mining and infrastructure development.
"Gao Cheng, a former veteran private equity investor from Hong Kong, is also digging for gold in the recycling industry.
"Bottled mineral water, however, is today's best-seller, at least on slower trains, and passengers are willing to dig deeper into their wallets for better brands, Yang said.
Sales of major heavy equipment including digging machines and loaders witnessed double-digit growth in China last year, pointing to improving vitality in the broader economy.
A total of 203,420 digging machines were sold, up 45 percent year-on-year and registering a new record, according to data from 25 manufacturers.
JINAN-With digging machines roaring and walls being built brick by brick, a new-generation greenhouse is under construction in Sanyuanzhu village, Shouguang, a major vegetable base in East China's Shandong province.
"Traditional destinations like Europe, the United States and Africa will remain the dominating consumption destinations, but there is more potential to dig," said Wang Qing, head of the CTMA.
Zhao said the future of design is "soft design", which is user-oriented and aims to dig out potential demand from consumers.
"It's time to stop digging a deeper hole while we can still climb out," Shay said.
Milan Nedeljkovic, a member of BMW's board of management responsible for production, said BBA produced 530,000 cars in 2019, and the 3 millionth, a plug-in hybrid, demonstrated BMW's determination to dig deeper into China's new energy vehicle market.
When I read and heard about this fascinating process, I began to dig deeper, and realized it holds enormous significance.
During the meeting, there were drone shows for fire fighting and automated delivery, unmanned vehicles for digging and demolition, as well as self-driving boats for testing water quality.
With China's perspective and international vision, the Global Top 100 Smart Manufacturing Companies ranking program will dig into the latest technological advances and applications in the intelligent manufacturing industry, present useful strategies for traditional enterprises facing drastic changes, facilitate the global reach of intelligent manufacturing enterprises, and serve as decision-making reference for research institutes, enterprises, and government agencies.
Only by digging deep into the needs of users and approaching the interrelationship among energy, communication and humankind's future, can people have a deeper understanding of the technology trend of 6G.
Haidian has been exploring more and digging deeper into urban functions as well as thoughtful and satisfying services for the people.
"Owners will be able to dig down more deeply into household data, allowing them to create an ambient temperature in each area of the house, and control the air quality and energy consumption of each room, based on climate and weather forecasts," said the report.
Despite ample reasons to be optimistic, it is bound to be a risky journey to dig returns from SMEs given the uncertainty over their development prospects and the scarcity of real disruptive innovations.
"We will dig into the data and compare with data from different regions, which can help improve the efficiency of fund management," Liu said.
The ongoing global reflation has implications for investment and may serve as a good case for young equity investors to learn how to dig returns from risks.
Bank of Handan conducted research into the granting of micro credit by small and medium-sized banks based on data mining-that is to say, digging into client data to distinguish good clients from not so good ones.
"Banks must dig deeper into their existing clients to create 360-degree client profiles and push comprehensive product portfolios to the clients by classifying customers into groups based on various factors and integrating internal resources, products and channels across different departments of a bank," Zhou said.
By digging into data provided by external institutions and its own data of transactions and settlement of enterprises in the upstream and downstream supply chain, the bank uses algorithms to decide the maximum amount of credit it extends to a small business.
The risk is the number of cases continues to skyrocket, and longer term, you're just digging a much deeper hole.
But for every loan of more than 500,000 yuan, apart from digging into data, the bank still needs experienced loan approval officers to help identify risks of potential fraud.
"BOC Wealth Management will launch equity products by digging into opportunities for stock market investment through its collaboration with professional entities.
Compared with banks, financial institutions which have a shorter history and less resources will dig deeper into the nonfinancial data of potential customers, such as those collected legally by telecom operators and travel information provided by other business partners so they can explore modeling based on this kind of data, said Chen Haitang, chief business officer of Merchants Union Consumer Finance Co Ltd. "Nonfinancial data are not directly related to financial services, so we need multidimensional data to produce a representation or simulation for these customers, and we must constantly upgrade the model we created.
"Besides, as we deepen our cooperation with these clients, we will dig into their financing needs and find business opportunities through constant contact.
考试真题例句(机器翻译仅供参考)
全部
考研
高考
四级
六级

考研Airborne technologies, such as different types of radar and photographic equipment carried by airplanes or spacecraft, allow archaeologists to learn about what lies beneath the ground without digging.

机载技术,如飞机或宇宙飞船携带的不同类型的雷达和摄影设备,使考古学家无需挖掘就能了解地下的东西。

2014年考研阅读原文

高考To construct a working still, use a sharp stick or rock to dig a hole four feet across and three feet deep.

要建造一个工作台,用一根锋利的棍子或岩石挖一个四英尺宽、三英尺深的洞。

2017年高考英语全国卷1 阅读理解 阅读D 原文

考研They often include a certain amount of digging to test for buried materials at selected points across a landscape.

它们通常包括一定数量的挖掘,以测试整个景观中选定点的埋置材料。

2014年考研阅读原文

四级It's nice to have people agree, but you need conflicting perspectives to dig out the truth.

让人们同意是件好事,但你需要相互矛盾的观点来挖掘真相。

2015年12月阅读原文

六级But schools rarely dig down to find out what really makes an applicant succeed, to create a class which also contains diversity of attitude and approach – arguably the only diversity that, in a business context, really matters.

但学校很少深入挖掘到底是什么让申请者成功,创建一个态度和方法多样的班级——在商业环境中,这可能是唯一真正重要的多样性。

2011年6月阅读原文

四级It was fortunate that the family didn't try to dig up the fossil because that could destroy the specimen; they did the right thing by calling someone who would know what to do.

幸运的是,这家人没有试图挖掘化石,因为那样会破坏标本;他们打电话给一个知道该怎么做的人,做了正确的事情。

2019年12月四级真题(第二套)听力 Section C

高考For example, when I'm writing a textbook, it has become second nature to check a dozen definitions of a key term, which helps me dig into the core and understand its meaning.

例如,当我在编写教科书时,检查一个关键术语的十几个定义已成为我的第二天性,这有助于我深入理解其核心并理解其含义。

2016年高考英语江苏卷 阅读理解 任务型阅读 原文

考研Some people like small talk in a meeting before digging into important matters, while other are more straightforward.

有些人喜欢在讨论重要问题之前在会议上闲聊,而另一些人则更直截了当。

2020年考研真题(英语二)阅读理解 Section Ⅱ

高考This included digging up the road, laying the track and then building a strong roof over the top.

这包括挖掘道路,铺设轨道,然后在顶部建造坚固的屋顶。

2017年高考英语全国卷2 语法填空 原文

四级While digging two pits at a site in the central plains of China, scientists discovered fragments from pots and vessels.

在中国中部平原的一个地点挖掘两个坑时,科学家发现了罐子和容器的碎片。

2017年6月四级真题(第一套)阅读 Section A

高考Dig a hole of a certain size.

挖一个一定大小的洞。

2017年高考英语全国卷1 阅读理解 阅读D 选项

高考We were respectful of craft and focused on digging into the characters we were going to play.

我们尊重工艺,专注于挖掘我们将要扮演的角色。

2017年高考英语全国卷2 阅读理解 阅读B 原文

考研Thousands of Aztec artifacts came to light during the digging of the Mexico City subway in the 1970s.

上世纪70年代,在墨西哥城地铁的挖掘过程中,数千件阿兹特克人的文物被发现。

2014年考研阅读原文

四级Each member volunteered to clean up and to dig in plot, five flats of flowers

每个成员都自愿清理和挖掘这块地,五个单位的花

2013年6月听力原文

四级Instead of digging through pieces of paper and peering into corners, we move our fingers left and right.

我们用手指左右移动,而不是从纸片中挖洞、窥视角落。

2015年12月阅读原文

四级If you spend a little time digging for the right part-time jobs, you’ll save yourself time when you find a job that leaves you with enough time to get your school work done, too.

如果你花一点时间寻找合适的兼职工作,那么当你找到一份工作时,你也有足够的时间完成学业,你就会节省自己的时间。

2016年12月听力原文

四级Each member volunteered to clean up and to dig in plot, five flats of flowers.

每个成员都自愿清理和挖掘这块地,五个单位的花。

2013年6月听力原文

四级If you spend a little time digging for the right part-time jobs, you'll save yourself time when you find a job that leaves you with enough time to get your school work done, too.

如果你花一点时间寻找合适的兼职工作,那么当你找到一份工作时,你也有足够的时间完成学业,你就会节省自己的时间。

2016年12月四级真题(第一套)听力 Section C

六级Perhaps it is time for farmers to put their feet up now that robots are used to inspect crops, dig up weeds, and even have become shepherds, too.

也许是时候让农民们站起来了,因为机器人已经被用来检查作物、挖掘杂草,甚至已经成为牧羊人。

2018年12月6级真题第一套

六级And now biologists like Dr. Etheridge are digging into the scientific texts that accompanied her art.

现在,像埃瑟里奇博士这样的生物学家正在挖掘伴随她的艺术而来的科学文本。

2018年12月6级真题第二套

四级What worries Richard Smith, the Skylab’s director, is the “big pieces” that will come through the atmosphere, Two lumps, weighing 2 tons each, and ten, weighing at least 1,000 pounds each, will come in at speeds of hundreds of miles an hour and if they crash on land they will dig holes up to 100 feet deep.

天空实验室主任理查德·史密斯担心的是将穿过大气层的“大块”,两块,每块重2吨,十块,每块至少重1000磅,将以每小时数百英里的速度进入,如果它们坠毁在陆地上,它们将挖出100英尺深的洞。

1994年6月大学英语四级(CET-4)真题

四级Each member volunteered to clean up and to dig and plot five flats of flowers.

每个成员都自愿清理、挖掘和规划五片鲜花。

2013年6月大学英语四级考试真题(第1套)

四级The report qualifies the more optimistic findings of another new paper which suggests that the world will not have to dig up a lot more land for farming in order to feed 9 billion people in 2050, as the Food and Agriculture Organisation has argued.

该报告证实了另一篇新论文中更乐观的发现,该论文表明,到2050年,世界将不必像粮食及农业组织所说的那样,为了养活90亿人而挖掘更多的土地用于农业。

2015年6月大学英语四级考试真题(第2套)

四级Instead of digging through pieces of paper and peering into comers, we move our fingers left and right.

我们不是在纸片里翻找,而是左右移动手指。

2015年12月英语四级考试真题(第2套)

四级It's nice to have people agree, but you need conflicting perspectives to dig out the truth .

有人同意是件好事,但你需要相互矛盾的观点来挖掘真相。

2015年12月大学英语四级考试真题(第3套)

四级There’s a lot on the internet about a state-wide ban in Florida, but a few days worth of digging by a historian at the Florida State Historical Society found no such legislation.

互联网上有很多关于佛罗里达州全州范围内的禁令,但佛罗里达州历史学会的一位历史学家经过几天的挖掘,没有发现这样的立法。

2020年12月大学英语四级真题(第3套)

考研In other words mineral substances which are found on the earth must be extracted by digging, boring holes, artificial explosions, or similar operations which make them available to us.

换言之,在地球上发现的矿物物质必须通过挖掘、钻孔、人工爆炸或类似的操作来提取,从而为我们提供这些物质。

1984年全国硕士研究生入学统一考试英语试题

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