四级This means that some wells may even need to undergo desalination after extraction, thus increasing the cost.

这意味着一些油井甚至需要在提取后进行脱盐，从而增加了成本。

2018年12月四级真题（第一套）阅读 Section C

四级The global economy is likely to undergo another recession.

全球经济可能会经历另一次衰退。

2016年12月阅读原文

六级The world will undergo revolutionary changes.

世界将发生革命性的变化。

2016年12月阅读原文

六级Some have 26 vanished from the face of the earth, others are dying slowly, but all have 27 undergone changes as they have come into contact with an 28 expanding machine civilization.

有些人已经从地球表面消失，有些人正在慢慢死去，但当他们接触到一个不断扩张的机器文明时，所有的人都经历了变化。

2016年12月六级真题（第三套）阅读 Section A

四级Quite the contrary, just as the cook has to undergo an intensive training, mastering the skills of his trade, the writer must sit at his desk and devote long hours to achieving a style in his writing, whatever its purpose-schoolwork, matters of business, or purely social communication.

恰恰相反，正如厨师必须接受密集的培训，掌握自己的职业技能一样，作家也必须坐在办公桌前，花很长时间来实现他的写作风格，无论其目的是学校作业、商业事务还是纯粹的社交交流。

1993年1月大学英语四级(CET-4)真题

考研Consequently, our feelings, thoughts and emotions have undergone a corresponding change.

因此，我们的感受、思想和情绪都发生了相应的变化。

2000年全国硕士研究生入学统一考试英语试题

考研For example, in the early industrialized countries of Europe the process of industrialization—with all the far-reaching changes in social patterns that followed—was spread over nearly a century, whereas nowadays a developing nation may undergo the same process in a decade or so.

例如，在欧洲早期工业化国家，工业化进程——以及随之而来的社会模式的所有深远变化——持续了近一个世纪，而如今一个发展中国家可能在十年左右的时间内经历同样的进程。

2000年全国硕士研究生入学统一考试英语试题