梦游对你的孩子没有害处，而且通常在孩子长大后就消失了。
Sleepwalking doesn't hurt your child, and it usually disappears when the kid grows up.
移民们很快就适应了这种共同的文化，这种文化可能并不完全发人深思，但也几乎没有害处。
Immigrants are quickly fitting into this common culture, which may not be altogether elevating but is hardly poisonous.
限制那些有足够天赋、即使睡眠少于平均值却能很好地工作和娱乐的人会阻碍我们的发展，这将是一件憾事，如果这确实对他们没有害处的话。
It would be a pity to retard our development by holding back those people who are gifted enough to work and play well with less than the average amount of sleep, if indeed it does them no harm.
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