A new mother,for example, quickly learns to try to sleep when her baby is quiet, even in the middle of the day.

VOA: special.2010.01.31

There is slow-wave sleep or "quiet sleep."

第一种是慢波睡眠，“安静的睡眠”

耶鲁公开课 - 心理学导论课程节选

See the merry limbs in hot Highland fling Because some wizard vermin Charmed from the quiet this revel When our ears were half lulled By the dark music Blown from Sleep's trumpet.

看那在苏格兰高地舞欢快的四肢,因为一些男巫,神往陶醉于这狂欢中,当我们的耳朵半听着,在黑暗音乐边的是小号的声音。

耶鲁公开课 - 现代诗歌课程节选