flog a dead horse

flog a dead horse

美 　英

• na.鞭打死马；徒劳无益；企图把已经讨论过并已被搁置的旧事重提
• 网络徒劳无功；白费力气；枉费心机

英汉解释

na.	1. 鞭打死马,徒劳 2. 徒劳无益 3. 企图把已经讨论过并已被搁置的旧事重提

英英解释

un.	1. to pursue a topic or course of action that is likely to be totally unproductive 2. to waste time on something that you know is not going to happen

例句

Son, we 've been over this so many times. The answer is "no" . Don't flog a dead horse!

儿子，这个问题我们已经讨论过很多次了。回答是“不能”。别老把时间浪费在没有希望的事情上。

It is useless to flog a dead horse.

鞭打死马，徒劳无益。

to flog a dead horse

鞭打死马