- be of no avail; a grain of wheat in a bushel of chaff; a pill to cure an earthquake; It does not help the matter.; of no help to the matter; to no effect; unhelpful; useless; (That) won't help things at all.
无济于事的用法和样例：
例句
空谈无济于事。
Talking mend no hole.
把老人送进医院是无济于事的了，他快死了。
It will do no good to send the old man to hospital, for he is dying now.
我竭力阻止她，但无济于事。
I did my best to stop her but in vain.
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