地下铁路 dìxiàtiělù subway Origin Definitions Defs Strokes Stroke Words Sentences Sents 地下 dìxià nounlocative underground below the surface of the earth; subterranean; used to describe places or things located beneath the ground铁路 鐵路 tiělù noun railroad railway or railroad; a transport line where steel tracks are laid on a roadbed for trains to run on