高考Some researchers argue that we can seal the machines inside a kind of firewall, using them to answer difficult questions.

一些研究人员认为，我们可以将这些机器密封在一种防火墙内，用它们来回答困难的问题。

2017年高考英语北京卷 阅读理解 阅读D 原文

高考It was kept in a plastic bag with a seal.

它被保存在一个有封条的塑料袋里。

2015年高考英语广东卷 阅读理解 阅读A 选项

高考Wang believes traditions should not be sealed in glass boxes at museums.

王认为，传统不应该被密封在博物馆的玻璃盒子里。

2018年高考英语全国卷3 阅读理解 阅读C 原文

四级The bottle is sealed, and the label says "pure water"?

瓶子是密封的，标签上写着“纯净水”？

2019年12月四级真题（第二套）阅读 Section A

六级What sealed Nokia's fate was a series of decisions made by Stephen Elop in his position as CEO, which he assumed in October 2010.

决定诺基亚命运的是斯蒂芬·埃洛普（Stephen Elop）在担任首席执行官期间做出的一系列决定，他于2010年10月担任首席执行官。

2015年12月六级真题（第三套）阅读 Section A

六级Grandchildren of mice fed a high-fat diet grow up fat even if their own mother is fed normally-so you fate may have been sealed even before you were conceived.

喂食高脂肪饮食的老鼠的孙子会长得很胖，即使他们自己的母亲喂食正常，所以你的命运可能在你怀孕之前就已经注定了。

2008年12月英语六级真题

六级Following a telephone call to the police from an anonymous caller, hundreds of shoppers were shepherded out of the store while roads in the area were sealed off.

在一位匿名来电者给警方打电话后，数百名购物者被带出商店，而该地区的道路被封锁。

2009年6月英语六级真题

四级Tightly sealed to prevent air leaks, the house was equipped with small double-paned (双层玻璃的) windows and several other energy-saving features.

为了防止空气泄漏，这所房子被严密地密封起来，并配备了小的双层板(双层玻璃的) 窗户和其他几个节能功能。

2001年1月大学英语四级(CET-4)真题

四级As a matter of fact, it is often very difficult for adoptees to find out about their birth parents because the birth records of most adoptees are usually sealed.

事实上，被收养者通常很难了解他们的亲生父母，因为大多数被收养者的出生记录通常都是密封的。

2007年12月大学英语四级考试真题