| 字词 | 徒劳无功 |
| 释义 | 徒劳无功 tú láo wú gōng prove futile; beat the air; be a wasted effort; burn daylight; carry coals to New Castle; catch shadows; catch the wind in a net; come to naught; draw water in (with) a sieve; end in smoke; fish in the air; flog a dead horse; hold a candle to the sun; labor to no purpose; make a futile effort; make useless trouble; milk a hegoat; much ado about nothing; not to succeed after trying hard; paint the lily; plough (sow) the sands; plow the wave; use (exert) vain efforts; wasted effort; work in vain; work to no avail |
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