beat a dead horse片语KK [bit ə dɛd hɔrs] /bit ə dɛd hɔɹs/发音片语1老调重弹、翻旧帐、纠缠已定之事口语The decision is final, so stop beating a dead horse.决定已经定案了,别再老调重弹。2白费力气、徒劳无功Trying to change his mind now is just beating a dead horse.现在想改变他的想法,只是白费力气。用这个字练口说→