Low emission, economical cars are gaining popularity in the world"s third largest auto market as an increasing number of new consumers are price conscious families who are sensitive to fuel costs. The urban elite and government officials are no longer the nation"s primary purchasers of vehicles.
词汇：
低排量的车为：
low-emission vehicles/cars
高排量的车为：
high-emission vehicles/cars
所谓低排量的车一般也是便宜的车，所以假如我买了一两小奥拓，可以说我买了一辆Low emission, economical car，而假如是买了奥拓他大哥比如４.0的奥迪Ａ８，那么我们可以说他是high-emission and luxury cars. 高档车我们有时候也简称premium cars。
在这里我们也呼吁一下
Ａll unreasonable limitations on the use of low emission vehicles should be cancelled.
顺便提一下汽车的排气管叫做：
exhaust pipe
排气管
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