当前位置:首页 >> 雾霾 英语演讲 >>

雾霾 英语演讲

Haze is air pollution in which is mixed upwith dust,smoke and other dry particles ,and it obscure the clarity of the skyand interacts with the natural environment. 雾霾原因 This kind of air pollutant come from avariety of natur...

网站首页 | 网站地图
All rights reserved Powered by
copyright ©right 2010-2021。