This is based 2009 data. China will prevail soon

來源: quantnj 於 2013-01-29 11:37:20 [] [舊帖] [給我悄悄話] 閱讀數 : (0 bytes)
回答: 弄來弄去，民主國家又領先了 由 勿來三 於 2013-01-29 11:30:28

所有跟帖： 

• By this website, Lanzhou is not too bad. -quantnj- ♀ 給 quantnj 發送悄悄話 (514 bytes) () 01/29/2013 postreply 11:54:25

• each country has only one city selected -野生動物攝影家- ♂ 給 野生動物攝影家 發送悄悄話 野生動物攝影家 的博客首頁 (64 bytes) () 01/29/2013 postreply 11:43:34

• 回複：有可能。這份名單不太可信。巴黎比北京汙染得厲害? -QinJin- ♂ 給 QinJin 發送悄悄話 (0 bytes) () 01/29/2013 postreply 11:48:58

• They take only city by country. Beijing is not in their sample s -quantnj- ♀ 給 quantnj 發送悄悄話 (0 bytes) () 01/29/2013 postreply 11:55:29

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