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1·You might think sleepwalking would happen during active sleep but a person isn't physically active during active sleep.

你可能认为梦游会发生在动态睡眠中，但一个人在动态睡眠中身体并不活跃。

2·We experience some deep, quiet sleep and some active sleep, which is when dreams happen.

我们会经历一些深层且安静的睡眠以及一些活跃的睡眠，而活跃的睡眠时期正是做梦的时候。

3·Throughout the night, people alternate between passive and active sleep.

整个夜晚，人们被动和主动之间轮流睡觉。

4·Each night we alternate between two kinds of sleep: active sleep and passive sleep.

每间两种睡眠：主动和被动睡眠晚上我们轮流睡觉。

5·The passive sleep gives our body the rest that's needed and prepares us for active sleep, in which dreaming occurs.

被动睡眠使我们的身体休息，我们需要准备主动睡眠，其中做梦发生。

6·Ground squirrels are normally active by day and sleep at night.

地松鼠一般白天活跃晚上睡觉。《柯林斯英汉双解大词典》

7·REM sleep is termed 'active' sleep.

快速眼动睡眠称作“主动”睡眠。《牛津词典》

8·It was specifically observed that the left side of the brain was more active during deep sleep.

人们特别注意到，在深度睡眠时，左脑更加活跃。

9·The brain is as active during REM (rapid eye movement) sleep when most vivid dreams occur as it is when fully awake, says Dr. Eric Nofzinger at the University of Pittsburgh.

匹兹堡大学的艾瑞克·诺夫辛格博士说，大脑在快速眼动睡眠期和完全清醒时一样活跃，大多数最生动的梦都发生在这个时候。

10·Grown-ups usually need 6-8 hours of sleep to keep active.

成年人通常需要6-8小时的睡眠来保持活力。