城市交通干线是城市路网的重要组成部分，它的通畅与否将直接影响着整个城市交通网络的运行效率。
Urban transportation trunks, as an important part of the urban road network, running smoothly or not directly affect the operation of the entire traffic network.
城市交通干线是城市路网的重要组成部分，它的通畅与否将直接影响着整个城市交通网络的运行效率。
Urban transportation trunks, as an important part of the urban road network, running smoothly or not directly affect the operation of the entire traffic network.
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