今年春天,奥巴马政府朝着在全国范围内普及绿色车辆的目标迈出了第一步。政府正式宣布,2016年车型的平均燃油经济性标准必须达到每加仑35.5英里。这是自1990年以来美国首次提出燃油经济性标准,并且可能是奥巴马政府为应对全球变暖所采取的唯一最大动作。不过,要想看到真正的绿 This spring, the Obama administration has taken the first step toward universalizing green vehicles nationwide. The government officially announced that the average fuel economy for the 2016 model must reach 35.5 miles per gallon. This is the first time that the United States has proposed fuel economy standards since 1990 and may be the single biggest move by the Obama administration in response to global warming. However, to see the real green