son的性别对应词是daughter。

son

n.儿子;(年长者对年轻男子或男孩的爱称)孩子;(某个地方、国家等的)男性成员，子孙

复数： sons

They've put their son down for the local school.

他们已经给儿子报名上当地的学校。

Our son's having problems with his reading and writing.

我们儿子在读写方面有困难。

Well, son, how can I help you?

那么，孩子，我能为你做点什么？