词汇	ground subsoil
释义	ground subsoil 路路面底基
随便看	Source-reducing Source reduction source reel source reference Source Reference Code source region source regional glacier system Source Region Electromagnetic Pulse source-region electromagnetic pulse Source Region EMP Protection source region of mass source region of the yellowriver Source region of three rivers source region of Yangtze River source region of Yangtze-Yellow rivers Source region of Yellow River source region setting source region sign source regions of three rivers source regions of Yellow River source register source register field source related limits source relief printing block source reporting