The viaducts are arteries for urban traffic in Shanghai so they are of fundamental importance.

上海高架道路是城市交通的大动脉,其地位十分重要.

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An empty freight train way over one of the numerous concrete viaducts near Tiekou station on - line.

一列空货车行驶在成昆铁路铁口站附近的大型水泥桥上.

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