As the human study suggests, another reason for dolphins keeping their eyes open during sleep is that they can look out for predators while asleep.

正如人类研究表明的那样，海豚在睡觉时睁着眼睛的另一个原因是，它们可以在睡觉时留意捕食者。

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Babies can apparently learn even while asleep, according to a 2010 study.

2010年的一项研究显示，宝贝们显然在睡着的时候也能学习。

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As if I did not remember other occasions when I have been tricked by exactly similar thoughts while asleep!

而我似乎忘记了，在其它场合下，我也曾在睡梦中被同样的想法欺骗！

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While most people are still asleep, he and his helpers prepare a meal every weekday for more than 200 people.

VOA: special.2009.01.28

One possible explanation, the dualist, that's the ghost of your mother, immaterial soul that she is, communicating to you while you're asleep.

一个可能的解释,二元论者会说,那是你妈妈的鬼魂,她是一个非物质的灵魂,在你睡觉的时候跟你交流

耶鲁公开课 - 死亡课程节选

We might say, look, while you're asleep, it's true that you're not P-functioning.

我们可以说，看，当你睡着时，确实没有人格功能性。

耶鲁公开课 - 死亡课程节选

Downloading lessons into the brain might sound like sci-fi, but technology that activates neural patterns might soon help us practice while asleep.

FORBES: Downloadable Learning -- Matrix Style: Welcome to Education's Laziest Frontier

They can be as small as opening your eyes while asleep or, at the very extreme end, driving a car while sleeping.

BBC: Sleep: Weird things people do in their sleep

Anderson has even treated someone who carefully dismantled grandfather clocks while asleep.

BBC: Sleep: Weird things people do in their sleep