to  beat  a dead horse
beat
bi:t
bit
a
ə
ē
dead
dɛd
ded
horse
hɔ:s
haws

“ beat a dead horse”的英语定义和含义

to beat a dead horse
01

白费力气, 执着于无望的事

to waste energy on a lost cause 
Dialectamerican flagAmerican
to [beat] a dead horse definition and meaning
disapproving
idiom
例子
Trying to reopen the case now is just beating a dead horse. 

现在想重启这个案子,只是在白费力气。

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