| 短语 | in a vain bid | 
| 释义 | in a vain bid (在某项工作或图谋上)失败;徒然:Jeffrey tried to complete a arduous task by himself in a vain bid,he had to ask his friends to help him.杰弗里试图自己一个人单独完成一件艰巨的工作,但失败了,他不得不请他的朋友们帮忙。 | 
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