铁路隧道;
Wuqiaoling tunnel, the longest single-track railway tunnel in China, is the key project of Lanzhou-Urumchi Railway.
乌鞘岭隧道是兰新线重点控制工程,是国内最长的单线铁路隧道.
He suggested that a railway tunnel should be built.
他建议建造一条双轨的隧道.
It will be built in an underground dedicated railway tunnel.
全线均采用专用轨道,并以地下隧道形式兴建.
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