美国肉类出口联合会发言人表示，中国要求自3月1日起由第三方确认进口美国猪肉不含瘦肉精，对中国加强瘦肉精检测的时机和动机尚不清楚。

The United States meat export association spokesman said,China is demanding the 1st March by the third party to confirm the import of U.S. pork does not contain the essence of lean meat,For China to strengthen ractopamine detection time and motivation is not clear.

　　美国肉类出口联合会发言人表示，中国要求自3月1日起由第三方确认进口美国猪肉不含瘦肉精，对中国加强瘦肉精检测的时机和动机尚不清楚。

The United States meat export association spokesman said,China is demanding the 1st March by the third party to confirm the import of U.S. pork does not contain the essence of lean meat,For China to strengthen ractopamine detection time and motivation is not clear.

　　中国是全球最大猪肉生产国和消费国，也是美国第三大猪肉出口市场。由于中国政府近期并未公布在美国猪肉中检出瘦肉精，分析师们对其举措感到困惑。前不久俄罗斯禁止进口一年5.5亿美元的美国猪肉，理由也是瘦肉精。

China is the world's largest producer and consumer of pork,Is the third largest pork export market.Because the Chinese government recently published in the United States did not pork in the check out clenbuterol,Analysts on the move was confused.Not long ago Russia banned imports of $550 million a year - American pork,Reason is clenbuterol.

　　中国防疫局官员对此不予置评，商务部发言人称不清楚该举措。

China's epidemic prevention bureau officials no comment,The ministry of commerce spokesman said the move is not clear.

　　中国要求第三方检测或将妨碍美国猪肉向中国大陆和香港的出口。去年出口额为8.86亿美元。尽管科学证据表明瘦肉精是安全的，但中国政府仍然十分担忧。联合国[微博]同意适量使用瘦肉精。

China is demanding the third party testing or it will interfere with the pork to mainland China and Hong Kong export.Last year exports to 886 million us dollars.Although the scientific evidence that clenbuterol is safe,But the Chinese government is still worry.The United Nations [micro bo] agree with moderate use of clenbuterol.