The proportion of single parent families varies between different income groups.

单亲家庭比例在不同收入群中各不相同。

《牛津词典》

A careful reading of the text reveals that most of the firstborn children in the sample were from single-parent homes in which the father was absent.

仔细阅读文本就会发现，样本中大多数头生子女都来自没有父亲的单亲家庭。

youdao

Whereas some of the low self-control study members are more likely to be single parents with a very low income and the parent is in poor health and likely to be a heavy substance abuser.

然而，一些自我控制能力低的研究对象更有可能是收入非常低的单亲父母，父母的健康状况很差，很可能是重度药物滥用者。

youdao

It shows more than half of the female victims were orphans or came from single-parent families.

VOA: standard.2009.10.04

But the rise of single-parent families in itself has complex social causes, and it will not be reversed by politicians.

ECONOMIST: The poor are still there, and need helping

Aside from the basics - utilities, schools, clean streets, efficient public transport - at which Tokyo traditionally excels, the Japanese megapolis provides sign-language interpreters for the deaf, home helpers for the elderly, and subsidies for single-parent households.

CNN: Tokyo

One would think an extra income contributed by a grandparent joining the household would help single-parent or even double-parent families.

CNN: Economy sends more kids to grandma's house