In the course of human development, 7-17-year-old is a very important stage.

在人类的发育过程中，7—17岁是一非常重要的阶段。

youdao

In the course of human development, 7-17-year-old is a very important stage.

在人类的发育过程中，7—17岁是一非常重要的阶段。

youdao