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英语翻译our body grows the most while we are asleep .the tired c

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英语翻译
our body grows the most while we are asleep .the tired children usually need more sleep .after we have plenty of rest ,we can do our lessons better .boy and gires about fifteen need nine hours of sleep .if we dont get enough fresh air ,we will feel tired when we wake up .while in bed,we mustnot cover our head.our lunges need to get enough air ,so we better open our window at night and let fresh air in.scientists say that cool air is better than warm air and sleeping in heated rooms does no good to our health.
英语翻译our body grows the most while we are asleep .the tired c
人体在睡觉时成长得最快.疲惫的孩子通常需要更多的睡眠.在我们拥有的足够睡眠之后,我们可以更好得生活.15岁左右的男孩、女孩需要9小时的睡眠.如果我们呼吸不到足够的新鲜空气,当醒的时候会感到很累.在床上的时候,千万不能蒙着头睡觉.我们的肺需要充足的氧气,所以晚上睡觉时最好打开窗户,这样新鲜空气就可以进来.科学家说凉爽的空气比热空气更好,睡在加热的房间对我们身体没好处.