| 词汇 | 徒劳无益 | 
| 释义 | 徒劳无益 tu lao wu yi ㄊㄨˊ ㄌㄠˊ ㄨˊ ㄧˋ 1.to burn daylight; to plough the air; to get nothing for one's pains; to work hard to little purpose; to bang one's head against a brick; to fight with one's own shadow; to hold a candle to the sun  | 
	
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