Babies sleep for up to eighteen hours a day.People

发布时间：2021-02-20 12:23:45

Babies sleep for up to eighteen hours a day.People have no idea how important sleep is to their lives.

网友回答

1）婴儿每天都要睡18个小时
2）人们不知道对婴儿们来说睡觉到底有多重要
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