| 词汇 | flog a dead horse |
| 释义 | flog a dead horse idiom UK informal (US informal beat a dead horse) 做无用功，做徒劳无益的事 to waste effort on something when there is no chance of succeeding He keeps trying to get it published but I think he's flogging a dead horse. 他一个劲儿地想将其出版，但我认为他在白费力气。 |
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