正发育的孩子必须睡眠充足。
A growing child needs plenty of sleep.

缺乏睡眠有害健康。
Lack of sleep is detrimental to one's health.

我们没有睡眠不能活，正如我们没有水就不能活一样。
We can no more live without sleep than (we can) without water.

多数人每天需要六至八小时的睡眠。
Most people need six to eight hours of sleep every day.

她偶尔不得不吃安眠药。
Occasionally she had to take sleeping pills.

那个老女巫用魔法迷住了公主，使她长眠不醒。
The wicked old woman bewitched the princess, and she fell into a long sleep.

忏悔之后他觉得好过一点，并且能安眠了。
After confession he feels a little better and can sleep at ease.

最近我睡眠不够。
I haven't had enough sleep lately.