首先，额外的学习对孩子们的身体发育是不利的的翻译：Firstly, extra studies on children physical development is bad for 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

First, the additional learning for the children's physical development is detrimental to

Firstly, extra studies on children physical development is bad for

First, the extra study to the child body growth is disadvantageous

First of all, extra study for the children it is adverse physical development of the

Firstly, extra studies on children physical development is bad for