I come from single-parent family.

我来自单亲家庭。

We were a typical single-parent family.

我们都是典型的单亲家庭。

It is important to remember that every single-parent family is different.

我们应记住很重要的一点就是，每一个单亲家庭都是不同的。

The most common type of single-parent family is one that consists of a mother and her biological children.

最常见的单亲家庭类型是由一位单身妈妈和她的孩子组成的家庭。

From 1970 to 2005, the proportion of children under 18 living in the single-parent family has fallen by 17 percent.

从1970年到2005年，美国生活在单亲家庭的18岁以下孩子的比例，下降了17个百分点。