Be careful to keep your mouth in range of the microphone; don't weave around or turn away to answer a question from the side.

要注意保持你的嘴在麦克风的范围内；不要晃来晃去或转过身去回答旁边的问题。

youdao

There is never any point in empty sentences. If you apologize, mean it. Otherwise keep your mouth closed.

空话是没有任何意义的。如果你要道歉，那就真心诚意。不然，就闭上你的嘴巴。

youdao

A good diet is required to keep the mouth and supporting structures in optimal shape.

良好的饮食习惯是保持口腔颌支持它们最佳结构所必需的。

youdao

"I would imagine that if he runs his cabinet meetings or his meetings with his advisors in the same way he ran his classroom, no one gets to coast and keep their mouth shut and agree at the end,"

VOA: standard.2010.01.16

If you keep your tongue in your mouth you're okay.

FORBES: Magazine Article

In many cases, the first aider can use mouth to mouth resuscitation techniques to keep the air passing in and out of the lungs.

BBC: Minutes matter

Because I still have a deathly fear of offending someone or talking about something way off-topic, I often hold my hand over my mouth in meetings to keep from speaking.

CNN: I have Asperger's; I am just like you