Underground car井下汽车
undergroundadj.地下的;秘密的adv.在地下;秘密地n.地下;地铁;地道;秘密活动
underground continuous walt地下连续墙
underground commercial zone地下商业
underground eontinuous wall地下连续墙
Underground Logistic System地下物流系统
underground pipeline finder地下管线探测仪
underground passing through地下穿越
underground hauling of coal井下运煤
underground illegal factory[法] 地下工厂