underpann.底盘(拖盘)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under-water pulling水下拖拉Underarm bromhidrosis腋臭underserved community所获服务不足的社区under one's very eyesunder a sense of duty在责任感的驱使下underslung water tank车下水箱underwriting standard保险标准underdetermined value欠定值under the thumb of sbadj.顺从支配undersurface pressure下表面压力