With crude oil selling at $40 a barrel, a gallon of unleaded regular gas now costs an average of $2 in the US [= 4.3 yuan per liter], a third more than it did a year ago.

• 随着原油卖到40美元一桶，常规的无铅汽油在美国的价格已是一加仑两美元左右(折合1升4.；3元人民币)，比去年上涨了三分之一。