我们大都知道没有经过循环利用的垃圾或者汽车排放的尾气都会对环境产生不利影响。
Sure, most of us consider the environmental impact our recycling habits or car's gas mileage may have.
道路上，也没有了拥挤，没有了汽车尾气的排放，全都用磁悬浮来代替燃料的燃烧，从而“温室效应”这一大难题也随之消失。
Road, also not crowded, not the automobile exhaust emissions, all with maglev instead of fuel combustion, thus "greenhouse effect" that a big problem also disappear.
我认为，没有污染主要归功于缺少具有尾气排放的汽车。
The lack of pollution, I think, is mostly due to the scarcity of cars with their exhaust fumes.
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