The evaluation index system for the regional rail transit network is different from those of the highway network and public transportation network.
区域性轨道交通线网评价与公路网、公交网络的评价体系存在一定不同。
Concern over air pollution has revived interest in light-rail transit and has led to regional mass transit systems.
对空气污染的忧虑使人们对轻轨运输重新产生兴趣，促成了地方性运输系统。
Concern over air pollution has revived interest in light-rail transit and has led to regional mass transit systems.
对空气污染的忧虑使人们对轻轨运输重新产生兴趣，促成了地方性运输系统。
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