介词短语
中文翻译：在极端情况下
同义词：
['in a desperate situation', 'inthe last resort', "at one'swit's end"]
例句：
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1. He decided to take action inan extremity of desperation.
他决定在绝望的绝境中采取行动。
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2. She was in an extremityof fear when she heard the news.
她听到那个消息时，陷入了极度的恐惧之中。
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3. The company had to make a difficultdecision in an extremity of economiccrisis.
在经济危机的绝境中，公司不得不做出艰难的决定。