A dead horse is quite different from a black horse.

死马和黑马是不一样的。

youdao

It is useless to flog a dead horse.

鞭死马无益；勿旧调重弹。

youdao

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。

youdao

We say this is like beating a dead horse.

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Even there, a horse is not really a rigid body, unless it's been dead for a long time.

马甚至都不是真正的刚体,除非是死了很长时间了

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Better, perhaps, to let the dead horse that is Mr Raffarin take another flogging.

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At the risk of flogging the proverbial dead horse, however, there are still some missing key apps.

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Yet they still cling to the belief that they can somehow squeeze some mileage out of a dead horse.

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