| 词汇 | 徒劳无功 |
| 释义 | 徒劳无功 tu lao wu gong ㄊㄨˊ ㄌㄠˊ ㄨˊ ㄍㄨㄥ 1.to make a futile effort; to work in vain; to plough (or sow) the sands; to bite on granite; to beat the air; to burn daylight; to catch shadows; to carry coals to New Castle |
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