In making that plea he will breathe in vain.

他做那种恳求是白费口舌的.

《现代英汉综合大词典》

Don't waste words on that fellow.

不要同那家伙白费口舌.

《现代汉英综合大词典》

Save your breath to cool your porridge.

不要白费口舌了.

《现代英汉综合大词典》

You value the opinions of swine, but I realize casting pearls before them is a waste of breath.

你重视蠢人的意见，但我意识到对他们白费口舌是徒劳的。

金山词霸

I don't care about what you think; save your breath to cool your porridge!

我不在乎你怎么想, 你省点力气,别白费口舌了!

《简明英汉词典》

I'll not waste my breath on you. I can see you are not going to help us at all.

我不在 这里 跟你白费口舌了, 我知道你根本不打算帮助我们.

《简明英汉词典》

I will not stay here wasting my breath on you.

我不在这里和你白费口舌了.

辞典例句

Don't waste your breath trying to persuade him.

别白费口舌去劝他了.

辞典例句

I'll not waste words on you.

我不跟你白费口舌了.

辞典例句

Asking him is wasting my breath.

问他是白费口舌.

辞典例句

I've already made up my mind. There's no sense beating a horse.

我已经下了决心跳绳可以长高吗,不要再白费口舌了.

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I've already made up my mind. There's no sense flogging a dead horse.

我已经下了决心,不必再白费口舌了.

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He won't pay attention to anybody. You're just wasting your breath.

他谁的话都不听, 你只是在白费口舌.

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Don't waste words on him. He is as stubborn as a mule.

别在他身上白费口舌了, 他非常固执.

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In vain he urged me to enter the lists with my friend.

他怂恿我去挑战我朋友,却白费口舌.

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