Well, sort of. We've known for a long time that quality sleep helps with good memory formation—that's one of the reasons that pulling all-nighters in college is NOT a successful strategy.

我们或多或少都知道好的睡眠质量有助于好的记忆力的形成--这就是在大学里成为一个夜猫子不是明智之举。

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Although patients may take drugs to help them sleep, such medications have side effects and are not usually long-lasting.

尽管病人或许会吃药来帮助他们睡眠，但这些药物会产生副作用，并且不是长效的。

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Learning by listening to information as we sleep has long been a mainstay of science fiction-and wishful thinking-but a new study suggests the idea may not be so farfetched.

长久以来人们认为在睡眠时收听资料来进行学习是天方夜谭，是痴心妄想，但是最新的一项研究发现这种方法也不一定是不可能的。

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Soon afterward, he drifted off to sleep not a long nap but a deep one.

NEWYORKER: Town of Cats

We are both upset about it and we did not sleep last night for a long time.

BBC: Tributes paid to Austria ski trip death teacher

He emphasizes, however, that he is interested in selling the drug only to the sick--not to sleep-deprived investment bankers or long-haul truckers.

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