Do not fasten all the Windows up while you sleep.

睡觉时不要将所有的窗户都关紧。

《新英汉大辞典》

Your legs may also move without your control while you sleep.

你的腿可能在你睡着的时候不受你控制的抖动。

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Noise, its researchers found, raises your levels of stress hormones even while you sleep.

此项研究的研究人员发现，即使在睡觉的时候，噪声也能提高一个人的应激激素水平。

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So, if you're woken up during slow-wave sleep you're going to be thinking "Did I take the-- yes, while I was dreaming I was thinking about the garbage," but if you're woken up during REM, "But a monkey was eating my grandmother," and that sort of thing. So, there is a distinction.

在慢波睡眠中醒过来,你会想“我倒垃圾了吗？,原来我睡觉是想着倒垃圾了”,但如果你在REM睡眠中醒过来，“天啊，有只猴子在吃我奶奶”,这就是真正的梦和半睡半醒的想法之间的区别。

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Better yet, keep one eye open while you sleep on the moves they make to improve education.

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Unless you deliberately sign off, however, you'll appear online and available for chat with friends -- even while you sleep.

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Even tonight, while you sleep under your hotel-monogrammed duvet, rest assured that 20 stories below, in some undisclosed location, researchers are hard at work documenting your whims and wishes -- Loves biking!

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