形容词 underhand:

1. with hand brought forward and up from below shoulder level

2. marked by deception

副词 underhand:

1. slyly and secretly- John Donne- C.G.Bowers

2. with the hand swung below shoulder level

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 commission from奉 ... 命令under favour of night在夜色掩护下under coating varnish打底漆undercarriage bracing起落架拉条underslung powerplant悬挂式动力装置under public scrutiny<名人等> 在众人注视之下under passing railway下穿铁路undercompound winding低复绕法under-strean period开工期underglaze decoration釉底装饰

1. The fire has been brought under control.
   火势已受到控制。
2. In other words,you must discipline yourself so that your drive is always under control and directed in the proper channels.
   换句话说，你必须约束你自己，以使得你的推动力永远受到控制，而且会被导引到正确的管道中。