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睡眠时间是生活时间的一个重要组成部分。睡眠时间的多少,在某种程度上,也反映生活质量。保持充足的睡眠时间,对于人们的身体健康是非常有益的。
Sleep time is an important part of life time. How much sleep time, to some extent, also reflects the quality of life. To maintain adequate sleep time, for the health of people is very useful.