ReadWriteQuiz
Chinese dictionary
derogget half the result with twice the effort; labour hard to little avail; achieve half the result with twice the effort
如果你坚持老办法,必然会事倍功半。
You will get half the results with twice the effort if you keep using the old method.
谈话方式方法不正确,就可能事倍功半,导致教育失败。
The incorrect talking method will cause failure for education.
antonym