这本书对我们的环境是处于危险之中。

This book about our environments is in danger.

youdao

这些环境对他们的健康和安全在很多时候都是很危险的。

These are often dangerous to their health and safety.

youdao

这些环境对他们的健康和安全在很多时候都是很危险的。

These are often dangerous to their health and safety.

youdao