reliability 

10871
TOEFL
单词释义
n.可靠性
词根词缀记忆/谐音联想记忆 补充/纠错
词根reliable 可靠的 …………
其他怎么记补充/纠错
词根记忆rely 依靠 + ability 能力 → reliability n.可靠性 …………
词性拓展记忆 / 词形拓展记忆
原形:reliability复数:reliabilities
词组和短语补充/纠错
software reliability 软件可靠性; 可靠性; 可靠度; 软件可靠度;
narrow-minded reliability 狭义可靠性
reliability estimation 信度估计法; 可靠性估算; 可靠性估计; 可靠性估计英语;
engineering reliability 工程可靠性; 可靠性工程学; 工程可靠性英语; 翻译;
retest reliability 再测信度; 复测信度; 重测信度;
reliability reliability theory 设备的可靠性与可靠度
reliability tesing 可靠性测试
doubt the reliability 怀疑可靠性
单词例句
Cats with a worldwide reputation for reliability.
猫在全世界都享有可信赖的好名声
We can vouch for the reliability of the machines.
我们可以保证这些机器的可靠性。
It can also improve the operational efficiency, safety, and reliability of the power system," said Jin Heping, chief information officer of China Three Gorges Corp.
它还可以提高电力系统的运行效率、安全性和可靠性。
It provides the increased scalability, reliability and access that allow databases to expand and become more distributed.
它提供了增强的可扩展性、可靠性和访问能力,使数据库能够扩展并变得更加分布式。
By using the vehicle, it can effectively avoid power interruptions and further improve power supply reliability, accumulating experience for subsequent grid maintenance.
通过使用该车,可以有效避免电力中断,进一步提高供电可靠性,为后续电网维护积累经验。
By 2025, more than 30 key standards for automotive chips will be established to outline foundational requirements such as environmental and reliability considerations, electromagnetic compatibility, functional safety and information security, the guideline said.
该指南称,到2025年,将制定30多项汽车芯片关键标准,概述环境和可靠性考虑、电磁兼容性、功能安全和信息安全等基本要求。
Wang Yicheng, a staffer from State Grid Taizhou Power Supply Co, said his company's region-wide power supply reliability and voltage qualification rate again surpassed 99.8 percent in December, meaning both urban and rural dwellers in the region enjoyed successful energy supply in the past year.
国网泰州供电公司工作人员王毅成表示,去年12月,该公司全区供电可靠性和电压合格率再次超过99.8%,这意味着该地区的城市和农村居民在过去一年中都获得了成功的能源供应。
"Equipped with automated facilities, the distribution centers are able to ensure reliability, scalability and potential for reduced marginal costs of our service networks in Southeast Asia," Chou said.
周说:“配送中心配备了自动化设施,能够确保东南亚服务网络的可靠性、可扩展性和降低边际成本的潜力。”。
"We have not only enhanced the performance, reliability, and user-friendliness of the products but also reduced the production and usage costs, allowing more agricultural producers to benefit from the convenience brought by technologies," said Peng Bin, chief executive officer and founder of XAG.
XAG首席执行官兼创始人彭斌表示:“我们不仅提高了产品的性能、可靠性和用户友好性,还降低了生产和使用成本,让更多的农业生产商从技术带来的便利中受益。”。
This substation's commissioning serves as a vital power source for the southern region of Luoyang, optimizing the grid structure, further enhancing power supply reliability, and augmenting regulatory flexibility to meet the burgeoning economic load demand.
该变电站的调试是洛阳南部地区的重要电源,优化了电网结构,进一步提高了供电可靠性,增强了监管灵活性,以满足日益增长的经济负荷需求。
It comprehensively enhances power supply reliability, regulatory flexibility and safety operational levels, effectively meeting the electricity demand for projects including a manufacturing development zone and an industrial park.
全面提升供电可靠性、监管灵活性和安全运行水平,有效满足制造业开发区、工业园区等项目用电需求。
After six rounds of power supply plan review meetings and multiple project feasibility studies, and engineering design, the company sought to provide service with safety and reliability.
经过六轮供电计划审查会议、多个项目可行性研究和工程设计,该公司寻求提供安全可靠的服务。
Chinese brands are now recognized for their enhanced reliability, efficacy and competitive pricing, attracting both domestic and international customers, Wang said, noting that her company, with its portfolio of 157 patents, has established a sales team in the United States and distributor networks in multiple countries, ensuring its products reach healthcare providers and patients worldwide.
王说,中国品牌现在因其增强的可靠性、功效和有竞争力的价格而受到认可,吸引了国内外客户。她指出,她的公司拥有157项专利,已在美国建立了销售团队,并在多个国家建立了分销网络,确保其产品惠及全球医疗保健提供者和患者。
The improved system can not only reduce the pressure on grassroots repair personnel, but also greatly improve the reliability of rural power supply, the company said.
该公司表示,改进后的系统不仅可以减轻基层维修人员的压力,还可以大大提高农村供电的可靠性。
This system improves the reliability and real-time performance of robots while also reducing equipment costs.
该系统提高了机器人的可靠性和实时性,同时降低了设备成本。
Traditional robots rely on a central controller, and if a failure occurs, the entire system may face the risk of a collapse, resulting in low reliability.
传统的机器人依赖于中央控制器,如果发生故障,整个系统可能面临崩溃的风险,导致可靠性低。
The upgraded metro line is now equipped with a communication-based train control system, which offers more precise train control, better service reliability and increased route capacity, the company said.
该公司表示,升级后的地铁线路现在配备了基于通信的列车控制系统,可以提供更精确的列车控制、更好的服务可靠性和更大的线路容量。
The company has also enhanced the efficiency and reliability of its solar cell technology in line with the demands of the Australian market.
该公司还提高了太阳能电池技术的效率和可靠性,以满足澳大利亚市场的需求。
These actions can also elevate the reliability and automation of equipment and enhance load access capacity.
这些措施还可以提高设备的可靠性和自动化程度,并增强负载访问能力。
It upgraded the power grid and improved the reliability of the power grid operation in a bid to provide full-capacity electricity for factory-style aquaculture.
它升级了电网,提高了电网运行的可靠性,为工厂式水产养殖提供全容量电力。
A representative of the customers, Wang Hongwen, director of Cargo Move Ltd, praised the team at Crystal Logistics in his speech and expressed appreciation to their attention to detail, efficiency, reliability, care and precision.
客户代表,货运有限公司董事王洪文在致辞中称赞了水晶物流的团队,并对他们对细节、效率、可靠性、细心和精确性的关注表示赞赏。
We believe there is a huge potential in deploying scalable demand-side energy storage solutions that can enhance the reliability and efficiency of the energy ecosystem," Huang said.
黄说:“我们相信,部署可扩展的需求侧储能解决方案具有巨大潜力,可以提高能源生态系统的可靠性和效率。”。
Pete Lau, chief product officer of Oppo, said the new generation Find N3 Flip is the only small foldable smartphone that can truly serve as the main handset, leading in all aspects of internal screen reliability, battery life, communication capabilities, external screen ecology, shooting and charging
Oppo首席产品官Pete Lau表示,新一代Find N3 Flip是唯一一款真正可以作为主手机的小型可折叠智能手机,在内部屏幕可靠性、电池寿命、通信能力、外部屏幕生态、拍摄和充电等方面都处于领先地位
However, problems of new energy dumper trucks still exist, especially in terms of battery life, energy replenishment, loading and reliability.
然而,新能源自卸车仍然存在问题,特别是在电池寿命、能量补充、装载和可靠性方面。
Energy storage plays a crucial role in ensuring the reliability and stability of energy supply, especially in renewable energy systems.
储能在确保能源供应的可靠性和稳定性方面发挥着至关重要的作用,尤其是在可再生能源系统中。
The company's commitment to excellence, reliability and innovation has earned it a solid reputation in China, making it a trusted partner for businesses seeking efficient, comprehensive and reliable logistics solutions in the country.
该公司对卓越、可靠性和创新的承诺为其在中国赢得了坚实的声誉,使其成为在中国寻求高效、全面和可靠物流解决方案的企业值得信赖的合作伙伴。
Meng Wanzhou, rotating chairwoman and chief financial officer of Huawei, also said on Wednesday that the company is committed to continuing investment in "root "technology research, improving product resilience and achieving high-performance, security and reliability so as to better facilitate digital transformation of the financial sector.
华为轮值主席兼首席财务官孟晚舟周三也表示,该公司致力于继续投资“根”技术研究,提高产品弹性,实现高性能、安全性和可靠性,以更好地促进金融业的数字化转型。
Huawei is committed to continuing investment in root technology research, improving product resilience and achieving high-performance, security and reliability in the cloud-edge-network ecosystem, Meng added.
孟补充道,华为致力于继续投资于根技术研究,提高产品弹性,并在云边缘网络生态系统中实现高性能、安全性和可靠性。
One of LCFC's other notable innovations is low-temperature technologies developed to improve PC manufacturing by conserving energy and increasing reliability.
LCFC的另一个显著创新是开发低温技术,通过节能和提高可靠性来改善PC制造。
Thanks to the use of cutting-edge technologies and modular designs, the YLC-16 features a streamlined appearance, low power consumption and a very high level of operational stability and reliability, Tang said.
唐说,由于采用了尖端技术和模块化设计,YLC-16具有流线型外观、低功耗和极高的运行稳定性和可靠性。
Cooperation with QatarEnergy will help improve the safety, stability, and reliability of China's supply of clean energy, Sinopec chairman Ma Yongsheng said.
中石化董事长马永生表示,与卡塔尔能源公司的合作将有助于提高中国清洁能源供应的安全性、稳定性和可靠性。
"Processing AI on the device – or edge AI – is necessary for latency-sensitive applications, enhanced reliability, more efficient use of network and cloud resources, as well as keeping sensitive data on the device," Amon said.
阿蒙说:“在设备上处理人工智能——或边缘人工智能——对于延迟敏感的应用程序、增强的可靠性、更有效地使用网络和云资源以及将敏感数据保存在设备上是必要的。”。
China's purchasing power, cost effectiveness and supply chain reliability are persuading an increasing number of MNCs that are keen to stay competitive, to look at areas like green growth, healthcare, high-end manufacturing, trade in services and cross-border e-commerce businesses.
中国的购买力、成本效益和供应链可靠性正在说服越来越多渴望保持竞争力的跨国公司关注绿色增长、医疗保健、高端制造、服务贸易和跨境电子商务等领域。
The current round of test flights will verify the reliability of the preparations done by China Eastern for the C919.
本轮试飞将验证东航为C919所做准备的可靠性。
"There might be a certain contradiction between easy-to-use and reliability.
“易用性和可靠性之间可能存在一定的矛盾。
As the first such model globally, China Eastern also needs to carry out more than 100 hours of testing flights to verify and confirm the operational safety, maintenance reliability and various operational support capabilities of the aircraft.
作为全球首款此类机型,东航还需要进行超过100小时的试飞,以验证和确认飞机的运行安全性、维护可靠性和各种作战保障能力。
"In 2021, we achieved 99.9 percent supply reliability globally — and our dependable performance has earned Aramco a leading position among China's energy suppliers, meeting around 18 percent of China's import needs in the first ten months of 2022," said Mr Al Hejazi.
Al-Hejazi先生表示:“2021年,我们在全球实现了99.9%的供应可靠性,我们的可靠表现使阿美石油公司在中国能源供应商中处于领先地位,在2022年前十个月满足了中国约18%的进口需求。”。
Jonyang launched in 2019 the second-generation product, which improved in reliability, safety and comfort compared with the first generation.
容阳于2019年推出了第二代产品,与第一代相比,该产品在可靠性、安全性和舒适性方面都有所提高。
We will showcase the GiM China MVP3, a digital platform that can offer feasible energy saving solutions to energy-intensive industries, as well as NK/NKE pumps that have high reliability and low maintenance costs, at this year's expo.
我们将在今年的博览会上展示GiM China MVP3,这是一个数字平台,可以为能源密集型行业提供可行的节能解决方案,以及具有高可靠性和低维护成本的NK/NKE泵。
When Chinese airlines buy aircraft, they have to consider safety and reliability.
当中国航空公司购买飞机时,他们必须考虑安全性和可靠性。
Multimodal technology can improve identification accuracy, provide contactless examination of subjects, and enhance data security and reliability, Zhou said.
周说,多模式技术可以提高身份识别的准确性,提供对受试者的非接触式检查,并增强数据的安全性和可靠性。
With its higher reliability and security, multimodal hybrid biometric technology is expected to be used more frequently in a variety of major uses, and its market size is expected to reach $18.1 billion in 2024, with a compound annual growth rate of 25.1 percent, the consultancy said.
该咨询公司表示,由于其更高的可靠性和安全性,多模式混合生物识别技术预计将更频繁地用于各种主要用途,其市场规模预计将在2024年达到181亿美元,复合年增长率为25.1%。
State Grid Hebei Electric Co Ltd said it plans to invest more than 15.86 billion yuan in power grid construction to further improve the reliability of local power networks, including the urban distribution network and the coordinated development of rural power grids.
国网河北电力有限公司表示,计划投资超过158.6亿元进行电网建设,以进一步提高包括城市配电网和农村电网协调发展在内的地方电网的可靠性。
"Since the pandemic, competition among airlines has become fiercer, and they need better products and services to raise efficiency and reliability and lower costs.
“自疫情以来,航空公司之间的竞争变得更加激烈,他们需要更好的产品和服务来提高效率、可靠性和降低成本。
"It is vital that vendors invest in next-generation health sensors and developing in-house algorithms and solutions to not only track vital biomarkers, but also to ensure good accuracy and reliability.
""The repeated lapse might spark concerns about the reliability and safety of the app," TechCrunch, an online publisher of technology industry news, said in a report.
So far, the Shanghai-based company has been capable of offering control system solutions with high reliability, strong openness, high safety and massiveness in the flow manufacturing field.
"In fact some sectors such as kiwifruit (even) had positive growth because of its very healthy nature as well as the supply chains that we have in place to be able to provide reliability for customers around the world," he said.
"Opportunities to pilot our system with world-class fleets like SF Express enable us to demonstrate the safety, reliability and maturity of PlusDrive.
Francis Gurry, former director general of the World Intellectual Property Organization, said, "In releasing its license fee structure for 5G standard essential patents, Huawei is promoting the widespread adoption and use of standards designed to ensure interoperability, reliability and transparent competition, while at the same time providing a fair return for investment in R&D.
The new manufacturing hub would extend Dow's local reach, further enhancing supply reliability, responsiveness to market needs and customized innovation, and better positions customers for success in markets including automotive, pharmaceuticals, cleaning chemicals, apparel, lubricants and adhesives, said the company in a release.
According to Henry Ling, vice-president of operations, Dow Asia-Pacific, the new hub will adopt and employ advanced digital, intelligence and automation technologies to create a manufacturing space of world-class safety, productivity, reliability and sustainability performance"The South China Specialties Hub will be built to Dow's world-class environmental, health and safety standards and aligned to Dow's recent commitment to become net carbon neutral by 2050," he said.
Quite a few test flights are needed for a commercial aircraft to get the necessary airworthiness certificates and it needs to continuously improve the safety, reliability and economy parameters, said Lin Zhijie, an aviation industry analyst and columnist at one of China's biggest civil aviation websites carnoc.
"To ensure the reliability and quality of RELX products, RELX established a chemical and physical laboratory in 2018.
"It has very broad market prospects as it can achieve a low cost transformation of the traditional convertible wagon market in a short period with good operational efficiency and equipment reliability," Wang said.
The trains, to ply in Bangkok, are equipped with fully-automatic unmanned driving technology and comply with advanced international standards emphasizing safety, reliability and comfort, PBTS said.
Beyond advanced research and development on metal lithium batteries, all-solid-state batteries and sodium-ion batteries, the 21C Lab will also work on the commercial application of its technology, such as developing lithium-ion battery reliability models, and non-destructive testing technology, the company said in a press release.
Modular IT rooms, prefabricated power modules with high reliability, intelligent monitoring, rapid cabinet deployment and other advanced technologies have been adopted in the cloud data center, according to project director Chen Yuhua.
At that time when the Chinese economy took off and laboratory research began to rise, brands “made in Germany” stood not only for premium quality and high reliability, but also for expensive prices.
Bayer is committed to the principles of sustainable development, and the Bayer brand stands for trust, reliability and quality throughout the world.
Its capability, environmental performance and reliability are world-class, according to CSSC.
"We achieved robust top-line growth for the fourth quarter as Chinese consumers increasingly associate the JD brand with trust and reliability," said Richard Liu, chairman and chief executive officer of the company.
These will include the following: battery safety design, battery performance and reliability verification, battery management system, functional safety, vehicle-to-grid charging solutions, grid integration, battery echelon utilization, energy storage systems and functional safety services to China's new energy vehicle manufacturers and power battery makers.
Thanks to its competencies in key components and comprehensive system engineering services, the company said it can help carmakers and fuel cell engine manufacturers improve system performance and reliability while reducing both system and vehicle costs.
Microsoft said it had considered foldable-screen PCs as an option, but it later found that current technologies may not be ready to provide the reliability and quality it demands.
It requires low latency, high reliability and wide bandwidth, and 5G technology can enable these functions.
These will include the following: battery safety design, battery performance and reliability verification, battery management system functional safety, vehicle-to-grid charging solutions, grid integration, battery ladder utilization, energy storage systems and functional safety services to China's new energy vehicle manufacturers and power battery makers.
Elaine Chang, corporate vice-president and managing director for AWS China, said the company aims to maintain its leadership in stability, reliability, security and resource efficiency through its advanced architecture design.
Model expected the metro sub-sector to continue high growth in China, while transport reliability and inter-modality could be further improved, and more transport services will be developed to fill in the last-mile transport gap.
"Chinese panel companies are developing rapidly in the flexible and foldable screens sector, but we still lag behind South Korean competitors in key technical talent, craftsmanship and product reliability," said Wang Jian, an analyst at Beijing-based market researcher Sigmaintell Consulting.
In comparison with manual driving, fully automated train technology makes use of modern communication, automatic control and computer skills, said Feng, stressing such technology can sharply improve the reliability, safety, availability, maintainability of rail transit, and upgrade the operating efficiency and overall automation level in an urban rail transit network.
It is designed to boost the intelligent manufacturing, which is characterized by a high level of productivity, efficiency and reliability of industrial production, experts said.
"Using the most advanced unmanned aerial vehicle in Ehang's newly-launched Falcon series, which feature the highest level of intelligence, automatic, safety and reliability, the intelligent delivery solution overcomes the complex road conditions and traffic congestion common to urban areas," said Derrick Xiong, Ehang co-founder and CEO of Ehang Tianyu, an Ehang subsidiary focusing on intelligent deliveries.
The Chinese aviation industry pioneer will move its remaining infrastructure to AWS by 2020, including its core business, maintenance, flight, security systems, and surrounding business management to the cloud, after seeing improvements in system availability and reliability, as well as cost reduction provided by AWS.
"AWS's technology leadership, reliability, innovative thinking and customer obsession convinced us to migrate almost everything to the cloud to drive our digital transformation," said Jiang Hanru, the chief information officer of China Express.
Abuelsamid said Kaiyun will have to demonstrate the reliability and durability that customers in this segment expect, as well as a strong support network.
By combining energy efficiency and reliability, clean generation, and sustainable practices, we are driving economic growth while creating a more vibrant and secure future.
Favoring the lowest bid does not help foreign companies because they are naturally more expensive as they focus more on reliability than cost.
Naghian highlighted the growing trend of consumer demand for high-quality products, saying the company will particularly target those who are quality-conscious, and appreciate reliability and sustainability.
"According to COFCO International, the initiative is expected to drive greater security, reliability, efficiency and transparency by digitizing manual, paper-based processes tied to contracts, invoices and payments, with a more modern, digitally based approach.
Jeff Gonneville, interim general manager of the MBTA, said: "The two railcars are the first step toward improving the reliability of our system, which our customers have been wanting for a long time.
Moda Managing Director Tony Brooks said the company's reputation for reliability was what had made Moda pick BCEGI as its partner on the job.
"The essence of competition is to provide cloud services with stability, security and reliability.
The partnership with Rolls-Royce for engine and service supply will allow both parties to benefit from each other's advantages in terms of business scale, technology, development and cooperation, to further enhance the safety and reliability of A350 XWB fleet operation, providing unparalleled experience to Chinese and international passengers," said Tang Bing, executive vice-president with China Eastern.
CATL Chairman Zeng Yuqun said the company will give priority to innovation in the future, and conduct research to develop long-lasting battery products with high energy density, reliability and safety, as well as quality battery solutions.
Besides sufficient electricity supply, the power grid also focuses on reliability.
Using advanced economies around the world as a benchmark, Beijing Electric Power has taken concrete measures to improve and promote the quality of power supply services, power reliability and ease of power generation, in order to better support the local business environment.
"In order to ensure we meet this demand, we are on track to increase our production capacity to 3.5 million barrels per day by optimizing both our existing and untapped hydrocarbon reserves, and further leveraging our low-cost advantage to ensure reliability and efficiency of supply," Al Jaber said.
He said the performance, lifespan and reliability of domestically constructed helicopter engines are pre-eminent, but there is still a gap between domestic and foreign-made levels.
Many enterprises in China, especially some tech-savvy companies, are sensitive to the potential damage cyber threats pose, the report said.360 Enterprise Security Group has signed a strategic agreement with Beijing Aerospace Guang-da Technology to promote the industrial internet, which is expected to boost the productivity, efficiency and reliability of industrial production as well as reduce its costs.
Zhang said that driverless technology will help to reduce human resources, given high requirement on reliability and stability of devices, while Xinhua cited engineers and automation experts that the automated operation system will avoid accidents caused by misjudgment or operational errors by controllers.
"There are a number of economic and social drivers that make nuclear the right option for clean, safe, reliable energy, including its reliability, long-term stable electricity prices and its on-site fuel source location," he said.
It aims to help Chinese users and enterprises in the processing industry, address new challenges in environmental protection, safety, energy-saving and reliability.
According to statistics from Boeing, in the fourth quarter of 2016, Hainan Airlines' 787 fleet achieved 99.62 percent reliability, topping the ranks for the same type of planes.
It is estimated that by 2020, over 6,000 jet engines in China can benefit from Predix-based data analytics service to improve their efficiency and reliability.
Andy Gill, senior director of business and aviation in Asia Pacific at Honeywell Aerospace, said the upgraded cabin connectivity offers global broadband access, providing the same internet speed and reliability that passengers can get at home or in the office.
"At present, Laos has connected with regional countries in terms of energy, but the competitiveness of our system is not strong enough and needs to be improved to ensure quality and reliability of connection," Bounoum said.
"This project is crucial to ensuring the supply of electric power with reliability, quality, stability and sustainability in these provinces," he said.
State Grid Dongying Hekou Power Supply Company, jointly with Hekou Development and Reform Bureau, explores integrated energy patterns, such as "solar power plus" or "wind power plus", to expand the capacity of the local power grid and improve its reliability and stability.
The metro line is now equipped with a communication-based train control system, which offers more precise train control, better service reliability and increased route capacity, said Wang Qiaolin, general manager of Hunan province-based CRRC Zhuzhou.
The dynamism and reliability of the domestic market must be further enhanced, and more work must be done to increase the attractiveness to the international market, they added.
BIS took this action because it was able to verify the legitimacy and reliability of foreign parties receiving US exports through the successful completion of end-use checks, according to the statement.
考试真题例句(机器翻译仅供参考)
全部
六级
四级
考研

六级Steel is valued for its reliability, but not when it gets cold.

钢的价值在于它的可靠性,而不是当它变冷时。

2019年6月六级真题(第三套)阅读 Section A

四级Old technology sometimes continues to exist because of its reliability.

由于其可靠性,旧技术有时会继续存在。

2014年6月阅读原文

六级It is always advisable for businesses to look beyond the price tag and look for a business only provider that can offer more reliability, with good support.

企业最好超越价格标签,寻找一家能够提供更高可靠性和良好支持的纯企业供应商。

2009年12月英语六级真题

四级Do their unchanging styles of dress reflect basic qualities of stability and reliability?

他们不变的着装风格是否反映了稳定性和可靠性的基本品质?

1993年6月大学英语四级(CET-4)真题

四级In some cases the software is used as a “second reader,” to check the reliability of the human graders.

在某些情况下,该软件被用作“第二阅读器”,以检查人类评分器的可靠性。

2015年6月大学英语四级考试真题(第2套)

考研(32 )How well the predictions will be validated by later performance depends upon the amount , reliability , and appropriateness of the information used and on the skill and wisdom with which it is interpreted.

(32)预测在多大程度上会被以后的表现所验证,这取决于所使用信息的数量、可靠性和适当性,以及解释信息的技巧和智慧。

1995年全国硕士研究生入学统一考试英语试题

考研Nonetheless, many companies still hesitate to use the Web because of doubts about its reliability.

尽管如此,由于对网络可靠性的怀疑,许多公司仍不愿使用网络。

1999年全国攻读硕士学位研究生入学考试英语试题

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