While sleeping, their body temperature drops and their heartbeat slows down.

睡觉时，它们的体温下降，心跳减慢。

youdao

While sleeping, their body temperature drops and their heart beat slows down.

睡觉时，他们的体温下降，心跳减慢。

youdao

So far, research suggests it may be possible to learn about the tone and pronunciation of a language or even the meaning of words while sleeping, although it is to a weaker level than what we do during the day without noticing.

到目前为止，研究表明，在睡觉的时候学习一门语言的语调和发音，甚至是单词的意思是可能的，尽管这比白天无意识学习的效果要差。

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They also suggest actions like providing protective boots to wear while working in fields, and not sleeping on the ground.

VOA: special.2010.01.25

So, one of the bizarre side effects is some people with Ambien while sleeping go downstairs, open up their refrigerator and eat huge amounts of food.

服用安必恩的其中一个副作用,就是梦游走下楼，打开冰箱，吃一大堆东西。

耶鲁公开课 - 心理学导论课程节选

And so it's really just this kind of rumination and you could do this while you're sleeping.

这其实只是一种思考,大家睡觉时也可以思考。

耶鲁公开课 - 心理学导论课程节选

Apnea testing measures how many times per hour you stop breathing while sleeping.

WSJ: A Test for Sleep Apnea From Your Own Bedroom

In a second part of the study, the researchers collected T-shirts worn by fathers and their children while sleeping.

ECONOMIST: There is a benefit in looking like dad

Seldom did we lock the boat when we left for short periods during the day and never while sleeping at night.

WSJ: Best Places to Retire: How to Retire to the Open Sea