rail_transit_system_construction

1.With the vigorous development and rapid construction of urban rail transit, it plays a more and more important role in the public transport system in China.
随着我国大力发展和建设城市轨道交通，其在公共交通体系中所扮演的角色越来越重要。
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2.Construction of rapid urban rail transit system has close bearings on the environment.
城市快速轨道交通建设与环境有密切关系。
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