beat a dead horse
US /biːt ə dɛd hɔrs/
UK /biːt ə dɛd hɔrs/
成語
1.
白費力氣, 徒勞無功
to waste effort on something that is no longer possible or cannot be changed
範例:
•
Trying to convince him now is just beating a dead horse; he's made up his mind.
現在試圖說服他只是白費力氣；他已經下定決心了。
•
Let's move on to a new topic; we're just beating a dead horse with this argument.
我們換個新話題吧；我們只是在為這個爭論白費力氣。
在 Lingoland 學習這個單詞