很多孩子在中小学就开始学外语。

Hěn duō háizi zài zhōngxiǎoxué jiù kāishǐ xué wàiyǔ.

Many children start learning foreign languages in primary and middle school.

这条街上有三所中小学。

Zhè tiáo jiē shàng yǒu sān suǒ zhōngxiǎoxué.

There are three primary and middle schools on this street.

这儿的中小学环境很好。

Zhèr de zhōngxiǎoxué huánjìng hěn hǎo.

The environment of the primary and middle schools here is very good.