At that time he had been writing children's books for almost fifty years.

VOA: special.2010.05.02

Those people, they're writing for children.

这些人都是为儿童写书的。

英语阅读：技巧 - SpeakingMax英语口语达人

In nineteen fifty, Woody began writing songs for children.

VOA: special.2010.06.20