Noun:

1. an undergarment that covers the body from the waist no further than to the thighs; usually worn next to the skin

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underlying topography下垫面地形underlining shortcuts对快捷方式加下划线underbalance drilling欠平衡钻井undertaking to appear允诺出庭under the castle wall在城墙下undershirt under vestn.汗衫under no circumstance在任何情况下都不underveloped property[经] 未开发的财产under water luminaire水下照明灯underrun the aircraft从下方超越飞机

1. He sat on the examination table in his underpants.
   他穿着内裤坐在诊查桌上。
2. I cannot find my new underpants.
   我找不到新的内裤。