The child stopped crying, but kept on sniffling.

那个小孩子不哭了, 但仍在抽噎.

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I have been sniffling for weeks.

我伤风鼻塞了好几个星期.

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I wish you wouldn't keep sniffling.

但愿你别总抽鼻子就好了.

《简明英汉词典》

The sick student was sniffling in the back row.

这个患病的孩子在后排不停地吸鼻涕.

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Sniffling and looking down while fidgeting around their knees with the hands.

当对方双手不停摩擦膝盖显示出坐立不安,他们会吸鼻并且往下看.

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You are always sniffling.

一天到晚老在哭.

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