to flog a dead horse

英汉... ... ) To be at the end of one’s rope 山穷水尽 ) To flog a dead horse 徒劳无益 ) To turn over a new leaf 改过自新 ...

... hitting the nail on the head 一针见血 to flog a dead horse 徒劳无功 to help a lame dog over the hill 救人之急 ...

英语常... ... to exchange high words 愤怒发言 to flog a dead horse 无法解决的事情 to get into one's stride 继续做例行公事 ...