英語翻譯
Shale gas is natural gas deposited in shale formation that is currently produced only in a handful of countries throughout the world,including the United States.The newly developed natural gas is often referred to as a game changer for its relatively cheap price,but the United States continues to strictly regulate its development,let alone its exports.
South Korea,the world's second-largest net importer of natural gas,seeks to expand its purchase of shale gas to 20 percent of its total imports by 2020.
In a joint statement dated May 7,Minister Yoon and Secretary Poneman said they noted the "important role that shale gas can play in promoting energy security and reducing greenhouse gas emissions."