Conflicts in the home often result from one child being thought of as his parents' favorite.

父母视其中一个孩子为掌上明珠常会引发家庭冲突。

youdao

In one year she turned from a problem child into a model student.

一年内，她从问题儿童变成了模范学生。

《牛津词典》

Thanks to my English teacher, I turned from a problem child into a model student in just one year.

多亏了我的英语老师，我在一年内从问题儿童变成了模范学生。

youdao

One death from the virus has been confirmed in the U.S.of a small child in the state of Texas.

VOA: standard.2009.05.01

There, couples with one spouse from a one-child family will be allowed to have a second child.

FORBES: The End of China��s One-Child Policy?

Now, that privilege is accorded to couples where both are from one-child households.

FORBES: The End of China��s One-Child Policy?

He said at least nine bodies had been pulled from the wreckage, including one child.

CNN: Yugoslav train hit during NATO strike; 10 dead