If you have an infant who gets up frequently through the night and a 4-year-old who's a light sleeper, having them share rooms might lead to some pretty tired, cranky kids and parents.

如果你有一个夜里经常哭闹的小婴儿，还有一个睡觉很轻的4岁孩子，那么，让他们共处一室可能会让孩子和父母都非常疲乏和暴躁。