The NLSY surveys asked the mothers about many things, including whether the father of their children lived with them.
全国青年纵向调查询问了母亲们许多问题，包括孩子的父亲是否与他们一起生活。
The NLSY surveys asked the mothers about many things, including whether the father of their children lived with them.
全国青年纵向调查询问了母亲们许多问题，包括孩子的父亲是否与他们一起生活。
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