Asleep inside the cannon "s mouth".

安睡在炮口里。

youdao

An enemy 's mouth seldom speaks well.

敌人口里无好话。

youdao

The jade could not be filled in an infant 's mouth, can only be filled in big Hippo mouth!

那么大的玉不可能噙在一个婴儿的嘴里，只能噙在大河马的嘴里！

youdao

The idea is that mothers would pour the liquid into the baby's mouth as part of an H.I.V.treatment program.

VOA: special.2010.05.24

When Pavlov put food powder in the dog's mouth and saliva was generated, that's an unconditioned stimulus giving rise to an unconditioned response.

巴甫洛夫给狗喂食,狗会分泌唾液，这就是无条件刺激引起了无条件反应。

耶鲁公开课 - 心理学导论课程节选

but I think that mostly it's about the word of mouth,

但我认为喜剧大多数是要口口相传的，

街头表演很有趣 - SpeakingMax英语口语达人

In fact there are potential pitfalls with introducing devices into an unconscious person's mouth.

BBC: NEWS | Health | Art students aim to save lives

Does the relative opening of a singer's mouth in a choir signify difference in pitch?

WSJ: Book Review: The Cambridge History of Musical Performance

On one occasion the employer forced a cane into the maid's mouth, bruising her gums.

CNN: Malaysia's Secret Vice