只有夫妇两个人的家庭平均花费582美金，大概比单身家庭多400美金。

Households consisting only of a husband and wife spent an average of $582, roughly $400 more than single-parent households.

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父母一起可以更好地抚养孩子，因为他们可以分出比单身家庭多的时间和精力照顾孩子。

And two parents are likely to be better at child-rearing because they can devote more time and energy to it than one can.

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他们在大学相遇，订婚，决定在结婚前介绍双方的父母认识。他们都来自于单身家庭。

The couple, who met at university, had decided they wanted to introduce their single parent families to each other before they got married.

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