Its tunnels were built using a method known as cut-and-cover, where rather than boring a tunnel through the ground, instead, a massive trench is dug, the railway built, and then the trench roofed over again.

地铁隧道是以明挖覆盖式工法兴建，不直接挖穿地面，而是挖掘坑道、兴建铁路轨道，再将地面回填。

He pushed the revs up and up, hurrying the car to eighty then to ninety, his huge Marchal headlights boring a safe white tunnel, nearly half a mile long, between the walls of the night.

他把转速越来越高，把车子开到八十，然后又开到九十，他巨大的马夏尔车头灯在夜幕之间穿出一条安全的白色隧道，将近半英里长。