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Babies sleep for up to eighteen hours a day.
People have no idea how important sleep is to their lives.
人气:298 ℃ 时间:2020-06-03 12:42:34
解答
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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