控制城市交通污染，必须严格控制机动车的排放。
Control of urban traffic pollution the motor vehicle emission should be controlled.
城市交通污染产生的根源在于城市交通的负外部效应。
The external negative effects of urban traffic is the root cause for urban traffic pollution.
城市交通污染已经上升为我国城市大气和噪声污染的主要污染源之一。
Urban traffic pollution has risen to one of the major sources of China's urban air and noise pollution.
开发了高层应用城市交通污染管理信息系统，由前台gIS系统、后台机动车排放模型、空间数据库三大部分构成。
Highly application of GIS to urban traffic pollution management has been developed, which consisted of proscenium-GIS system, back stage-motor vehicle emission model and spatial data base.
文章在总结城市交通污染产生原因的基础上，通过最优污染水平控制模型的建立，分析了减少交通污染的途径和方法。
The paper discusses the causes, how to build up a best pollution-control model and possible approaches to reduce traffic pollution.
城市交通是温室气体排放的一个主要来源，也是空气和噪音污染造成健康状况不佳的一个原因。
Urban transport is a major source of greenhouse gas emissions and a cause of ill-health due to air and noise pollution.
城市交通机动车污染问题非常复杂，有许多下可控因素。
The problem of urban traffic pollution is very complicated, there are several uncertain factors.
这些地下铁道必在改善中国城市交通环境、缓解城市交通拥挤、减少城市污染等方面起到积极的作用。
It is unquestionable that the subways will play a positive role in the respects of improving the urban traffic conditions, alleviating the traffic jams, reducing the pollutions.
随着公路建设和城市交通的飞速发展，交通噪声污染成为道路交通中不可忽视的问题。
With the development of highway transportation and urban road construction, the traffic noise pollution becomes very important problem.
城市交通是一个动态系统，污染物排放量始终处于变化之中。
Urban traffic is a dynamic system, whose pollutant emission always changes.
往往城市交通阻塞大都发生在交叉口，不仅导致了车流中断、事故增加、延误加重，还导致城市环境污染加剧。
Urban traffic congestion most often occurred in the intersection, which not only led to traffic disruption, accidents increased and delays aggravation, also led to urban pollution increased.
同时，交通污染问题，也给人们的生存环境带来巨大冲击和破坏，城市交通面临着前所未有的压力。
At the same time, the traffic pollution brings tremendous damage to the environment, and urban traffic is facing an unprecedented pressure and contradictions.
而随着城市交通的飞速发展，同时也带来了一系列问题如城市交通拥挤、交通延误、交通事故和交通污染等。
However, with the rapid development of urban traffic, it also brings some issues such as urban traffic congestion, traffic delays, traffic accidents and traffic pollution.
随着城市的飞速发展和道路基础设施的逐步改善，城市交通密度也逐年增加，交通噪声污染情况越来越严重。
With the city's rapid development and gradual improvement of road infrastructure, urban traffic density increased year by year, the noise pollution of road traffic has become increasingly serious.
随着城市的飞速发展和道路基础设施的逐步改善，城市交通密度也逐年增加，交通噪声污染情况越来越严重。
With the city's rapid development and gradual improvement of road infrastructure, urban traffic density increased year by year, the noise pollution of road traffic has become increasingly serious.
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