美国曾经是第一大生产国，

Besides, I did not put them in. It is Business Insider put it in. Look the original link..

所有跟帖： 

• Yes. But they realized that it is not good for people's health. -2544- ♀ (0 bytes) () 01/27/2012 postreply 04:39:16

• They should not put it in. There are other areas to better compa -丁庄秀园- ♂ (0 bytes) () 01/27/2012 postreply 09:07:43