精选优质文档-倾情为你奉上奥巴马哥本哈根气候变化大会讲话（2009年12月日在丹麦首都哥本哈根举行的联合国气候变化大会）Good morning. It is an honor for me to join this distinguished group of leaders from nations around the world. We come here in Copenhagen because climate change poses a grave and growing danger to our people. All of you would not be here unless you - like me - were convinced that this danger is real. This is not fiction, it is science. Unchecked, climate change will pose unacceptable risks to our security, our economies, and o
