Beat a dead horse 白费口舌
1970-01-01 08:00:00 每日学英语
“beat a dead horse”并非“打一匹死马”的意思，而是“ 多此一举，白费口舌，徒劳无益”的含义。
【例句】
Why do you insist on beating a dead horseby bringing up these ancient problems of ours?
你为什么旧事重提，这岂不是白费唇舌！
I hate to beat a dead horse, but it is very important that you understand this before you leave.
我不想多此一举，但你离开以前必须了解这个。