介绍当前机动车运行对城市环境造成的严重污染状况和危害性，分析了各种污染因素的作用，提出了防治污染的对策及措施。
The motor vehicles' running in cities results in the serious pollution on the environment. Analysis is made on the effects from various polluting resources, and given the counter-measures.
介绍当前机动车运行对城市环境造成的严重污染状况和危害性，分析了各种污染因素的作用，提出了防治污染的对策及措施。
The motor vehicles' running in cities results in the serious pollution on the environment. Analysis is made on the effects from various polluting resources, and given the counter-measures.
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