underarmadj.腋下的；低手式的adv.(板球）低手式地underprep.低于；在 ... 下；在 ... 内；在 ... 控制下adv.在昏迷中；在 ... 下adj.下面的；从属的；少于的underdevdoped area经济欠发达地区underdeck shipment舱内装货under voltage trip欠压解扣underbody diffuser上翘角underfined concept未定义概念underlying pattern基本图案underwriting group证券包销集团underlying carrier基础载波underroad pipeline地下管线undercarriage door起落架舱门