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
undersigned all agree签署人一致同意
under the pretense of[法] 藉口; 以 ... 为托词
underprivileged homes贫困户
under water explosion水下爆炸
undermining-torrent侵蚀野溪
under water buildings水工建筑物
under seal of secrecyadj.保证严守秘密
Under the Lion' s Paw
undermoderated system慢化不足体系
undercurrent tripping欠流跳闸