名词
中文翻译：Unknown
同义词：
['exhaustion', 'weariness']
例句：
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1. The marathonrunner was so exhausted that he couldn't continue.
马拉松跑者筋疲力尽，无法继续。
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2. Aftera long day at work, she felt completely worn out.
工作了一整天后，她感到完全筋疲力尽。
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3. The old man hadbeen working tirelessly for weeks,and now he was completely exhausted.
老人连续工作了好几周，现在筋疲力尽。