We may learn differently during different sleep stages.
在不同的睡眠阶段，我们的学习方式可能会有所不同。
We dream during different sleep stages throughout the night.
一整夜，我们在不同睡眠阶段都做梦。
It's known that levels of growth hormone rise during certain stages of sleep.
在睡眠进行的一定阶段的时候，生长类的激素就会上升。
When you sleep you get the following stages.
睡眠有以下几个阶段。
Scientists have identified various stages of sleep.
科学家们已经可以识别不同的睡眠阶段。
There are several different stages of sleep, and they too ur in cycles.
有几个不同阶段的睡眠，和他们也发生在周期。
There are several different stages of sleep, and they too ur in cycles.
有几个不同阶段的睡眠，和他们也发生在周期。
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