The exhaust gas from cars pollutes the air and they waste energy.
汽车的尾气污染了空气，浪费了能源。
As Rob Carlson of the University of Washington points out, if money is to be made selling products made from exhaust gas, then that gas goes from being waste matter to being a valuable resource.
正像华盛顿大学的罗伯·卡尔森所指出的那样，如果出售废气可以赚钱，那么，这些气体就会由废物变为有价值的资源。
A absorption automotive air conditioning system fed by waste heat of exhaust gas was raised, and the feasibility was discussed by analyzing the structure of the system and thermodynamics.
提出了一个利用尾气余热的吸收式汽车空调系统，通过热力学计算及结构分析指出了吸收式汽车空调系统的可行性。
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