伊人不卡,国产乱码一二三区精品,亚洲午夜综合,亚洲网站在线,亚洲国产二区三区,开心伊人网,tiantianri

   
 
 
Home > Updates

Desertification control along railway route

By Zhao Xiao (chinadaily.com.cn)

Updated: 2017-03-14

Desertification control along railway route

Sand-control grids along the railway help keep the desert in place. [Photo/Xinhua]

Copyright ? 2013 China Daily All Rights Reserved
Sponsored by the Inner Mongolia Autonomous Region Government
Powered by China Daily