短语词组短语taper off at the top 物体下大上小skim off the top 瞒天过海cut off the top 削顶skin off the top 瞒天过海right off the top 开始go off the top 冒火fell off the top 上掉了下来shut off the top window 关闭天窗off the top ofone 's head 不假思索 返回 off the top