国内英语新闻:U.S. official says U.S.-China relations should not be portrayed as a zero sum game

U.S. goods and services exports to China totaled 85 billion dollars in 2009, and China is the U.S. third largest export market.

However, the two U.S. top trade officials also bluntly attacked some Chinese economic policies, vowing that the Obama administration will take strong actions to tackle the trade disputes with China.

"When cooperation and dialogue are not enough, we are committed to utilizing all the tools we have available in order to make the progress we need," said Lock at the hearing.