1. 名詞
   用力, 費力
   努力
   /以上可為可數與不可數名詞/
   /複數為"exertions"/
   限定不可數名詞:
   運用, 發揮
   行使
   exertion of ...(能力、權力等的):
   ...的運用
   ...的發揮
   

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   同義字詞
   activity,conditioning,exercise
   effort,elbow grease,expenditure,labor,pains,sweat,trouble,while,work
   

例句

1. Avoid over exertion upon arrival.
2. Contemplating, he makes an exertion .
3. They are defined by mere physical exertion .
4. Shortness of breath with exertion will result.
5. All his exertion consisted in inhaling the air.
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