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Early Subways

TermDefinition
subway an underground urban railway system used for mass transit
cut and cover a method of construction for shallow tunnels where a trench is excavated and roofed over
excavation the process of digging or removing earth
bore to make a hole in something with a tool or by digging
congestion overcrowding typically in the context of traffic or transportation
station a regular stopping place on a public transportation route
express service a rapid transit service which skips certain stops to provide faster travel
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