[英文成語]FLOG A DEAD HORSE. — 英文成語學習：深入理解鞭打死馬的意義

鞭打死馬

「Flog a dead horse」意味著繼續做無用功或無望的努力。當某個議題已經解決或某個計畫明顯已經失敗，繼續推動只是浪費時間和精力。例如，在一個被明確拒絕的提案上，繼續試圖說服別人就是在「鞭打死馬」。

範例句子

1. He's just flogging a dead horse trying to get that old car to run again.

   他試圖讓那輛舊車再次運行，這無異於白費力氣。

2. Arguing with him is like flogging a dead horse; he never changes his mind.

   和他爭論就像白費力氣一樣；他永遠不會改變主意。

3. Continuing to ask for funding from that source is like flogging a dead horse; they’ve already said no.

   繼續向那個已經明確拒絕的來源要求資金就像白費力氣一樣。