名词
中文翻译：疲劳
同义词：
['weariness', 'exhaustion', 'strain', 'weariness']
例句：
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1. Shewas so exhausted after the long day's work.
工作了一整天之后，她非常疲惫。
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2. The marathon runner must have been extremely fatigued by the end of the race.
马拉松跑者在比赛结束时一定非常疲惫。
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3. He was so worn out that he couldn't keep going any further.
他累得筋疲力尽，再也走不动了。