We couldn't adopt a child, so we decided to foster.

我们不能领养孩子，所以决定代养一个。

《牛津词典》

There are hundreds of people desperate to adopt a child.

有数以百计的人极其渴望收养小孩。

《柯林斯英汉双解大词典》

Sometimes, however, a couple can not have a child of their own. In this case, they may decide to adopt a child.

尽管如此，有的时候他们却不能生育自己的孩子。

youdao