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- 他睡眠不足。
He didn't get much sleep.
- 你需要几个小时的睡眠？
How many hours' sleep do you need?
- 她让我吃些药片以利睡眠。
She prescribed some pills to help me to sleep.
- 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.
- 最近我睡眠不够。
I haven't had enough sleep lately.
- 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.
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