| 词汇 | 徒劳无益 |
| 释义 | 徒劳无益徒劳无益[tú láo wú yì]1.■flog a dead horse; be a fool for one's pains; be merely wasting one's energy; carry coals to Newcastle; come to naught; end (up) in smoke; look for a Newcastle in a bundle of hay [in a haystack]; make much ado about nothing; of no avail; pour water in a sieve; work in vain |
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