Second, the world’s two largest greenhouse-gas emitters, the United States and China, are now more committed to action than they were five years ago. US President Barack Obama has announced a far-reaching plan that authorizes the Environment Protection Agency to take dramatic measures in the next few months to limit power-station emissions, virtually ending coal-fired electricity generation altogether.
其次，世界两大温室气体排放国——美国和中国做出了比五年前更重大的承诺。美国总统奥巴马公布了一份意义深远的计划，授权环境保护署（Environment Protection Agency）在未来几个月中采取重大措施限制电厂排放，并在事实上取缔燃煤发电。