求翻译：2、2007年3月，中日韩三国成立联合研究委员会，负责探讨建立中日韩自由贸易区的可行性，并开始进行三边投资协定谈判。是什么意思？

March 2,2007, Japan and South Korea to set up a joint research committee charged with exploring the feasibility of the establishment of the Free Trade Area of ​​Japan and South Korea, and trilateral investment agreement negotiations.

2, 3, 2007, 3 in South Korea on the establishment of the Joint Research Committee, is responsible for exploring China, Japan, and South Korea free trade agreement, and start of the 3 side investment agreement negotiations.

2nd, in March, 2007, the Chinese, Japanese, and Korean Three Kingdoms establishes the union board of study, is responsible to discuss establishes the Chinese, Japanese, and Korean free trading area's feasibility, and starts to carry on the trilateral investment agreement negotiations.

2, March 2007, in China, Japan and South Korea to set up joint research Committee, is responsible for the discussion on the feasibility of the establishment of Sino-Japan-Korea free trade area, and began trilateral investment agreement negotiations.