'Be quiet,' said the teacher.

“安静点！”老师说道。

《牛津词典》

Be quiet, I have something to say.

安静，我有话要说。

《牛津词典》

Be quiet! He hasn't finished speaking.

安静！他还没有讲完。

《牛津词典》

I told them to please be quiet or I would punish them.

VOA: special.2009.05.03

" To sit a class and be quiet?"

坐在教室里发呆“

哈佛公开课 - 幸福课课程节选

you should be given the opportunity to be quiet.

你应该有权保持安静。

对于义务投票制 - SpeakingMax英语口语达人

For instance, a submarine must be quiet and a smart bomb must be accurate.

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WIth all eyes on the polls, Wall Street is likely to be quiet Tuesday.

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President Boris Yeltsin's Beijing trip, scheduled to begin April 24, should be quiet by comparison.

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