他要是睡眠不足动不动就发脾气。

He gets ratty if he doesn't get enough sleep.

不同的人对睡眠的需要差异相当大。

The need for sleep varies considerably from person to person.

她由于缺乏睡眠而双眼昏花，布满血丝。

She had bleary red eyes from lack of sleep.

她因缺乏睡眠而头脑昏沉。

Her brain was befogged by lack of sleep.

睡眠不足可能导致焦虑。

Anxiety can be caused by lack of sleep.

快速眼动睡眠称作“主动”睡眠。

REM sleep is termed ‘ active ’ sleep.

她的眼睛因睡眠不足而隐隐作痛。

Her eyes ached from lack of sleep.

人们常常认为睡眠在某种意义上来说类似死亡。

Sleep has often been thought of as being in some way analogous to death.

与睡眠好的人相比，睡眠不好的人要花更长的时间才能入睡。

Poor sleepers take longer to fall asleep than good sleepers.

我们对睡眠的需求量因人而异。

The amount of sleep we need varies from person to person

我们的睡眠模式是心理健康的晴雨表。

Our sleep pattern is a barometer to our psychological well-being.

随着时间的推移，睡眠逐渐不再成为问题。

As time goes by, sleeping becomes less of a problem.