Her most annoying habit was eating with her mouth open.

她最让人讨厌的习惯就是张着嘴吃东西。

《牛津词典》

She is sleeping with the mouth open.

她张着嘴睡觉。

youdao

Tom pried his mouth open and poured down the Pain-killer.

汤姆撬开他的嘴，把止痛药倒了下去。

youdao

Germont looked at Dupin with his mouth open.

VOA: special.2009.12.26

You have to stop eating with your mouth open.

你不能再边说话边吃饭了。

have to 实战 - SpeakingMax英语口语达人

As the fierce winds charged her belly, Her body was distended and her mouth was wide open.

这时邪风充满了她的肚子，她的身体膨胀起来，她的嘴长得很大。

耶鲁公开课 - 旧约导论课程节选

The profile photo is the face of a lion with its mouth open, baring its fangs.

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One of them, a child, lays with his face frozen in fear, mouth open and arms outstretched.

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And then I turned around and saw that a managing director was watching with his mouth open.

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