Perhaps most important, the United States and China – the world’s top two emitters, which together account for more than one-third of global greenhouse-gas emissions – have finally stepped up, announcing concrete climate commitments in a joint statement last year. This injected significant momentum into global climate efforts.
或许最重要的是，美国和中国这两个合并排放量占全球温室气体排量三分之一以上的全世界最大的排放国终于加快了脚步，在去年一份联合声明中公开了具体的气候承诺。这在极大程度上推动了全球气候工作。上个月，中国国家主席习近平又进了一步，承诺将在2017年建成为二氧化碳排放定价的全国性市场。