众所周知，词汇是GRE考试的基础。那么怎样才能掌握GRE必备的词组呢？
这里为大家总结一些常用的核心词组，希望对各位备考有帮助。
本期CRE必备词组:
at the mercy of 任……摆布
释义:
If one person or thing is at the mercy of another, the first person or thing is in a situation where they cannot prevent themselves being harmed or affected by the second.
例句
Running out of food and fuels, they are at the total mercy of Mother Nature.
GRE
An institution concerned about its reputation is at the mercy of the actions of its members; because the misdeeds of individuals are often used to discredit the institutions of which they are a part.那些关注自身声誉的机构通常要受到其成员行为的影响;因为人们通常会因为个人的不当行为而指责其所在的机构。
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