白费: labour in vain徒劳: futile effort; fruitless lab ...白费气力, 徒劳: to beat the air徒劳, 白费力: beat the air徒劳,白费,无效: in vain徒劳,白费力: in vain; invain白费力气, 徒劳无益: lash the waves徒劳无功,白费功夫: in vain徒劳无益;白费力气: carry coal to newcastle徒劳无功的,白费力气的: futile白费: waste; in vain 你不要白费心思。 you needn't bother your head for nothing. 我们的力气没有白费。 our efforts were not in vain.; we didn't waste our energy徒劳: futile effort; fruitless labour 要想阻止历史潮流是徒劳的。 it is always futile to try to hold back the progress of history白费的: ineffectual; useless白费劲: chase 1白费力: bite a file; fish in the air; plough the air; plough the sand白费事: all in vain吠月, 徒劳: bark at the moon; bay the moon徒劳,无效: in vain徒劳的: cutting it fine; empty; furitless; futile; in vain; infructuous; rewardless; sisyphean; unavailing; ungrateful; vain徒劳地: fruitlessly; in vain; vainly无用, 徒劳: without avail白费口舌,白费力气: beat a dead horse白费痴情: a boaster and a liar are cousins-german; a book is the same today as it always was and it will never change白费唇舌: waste one's breath; waste one’s breath白费的成本: lost cost