We still need your insights

来源: wadcChinese 于 2013-01-23 11:04:46 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (280 bytes)
回答: i already pointed out this issue for 由 老看客 于 2013-01-23 10:24:43

BJ was polluted 20+yrs ago whenever there was a sandstorm. 10+ yrs ago it is hard to see the sun. The sun looks like a moon. Now one may not see the sun at all.

What are the causes? What measures can be taken to control the pollution. 

所有跟帖： 

• thx! I'll try to put a post here -老看客- ♂ 给 老看客 发送悄悄话 老看客 的博客首页 (27 bytes) () 01/23/2013 postreply 11:28:43

请您先登陆，再发跟帖！