roll down
phrasal verbroll something down
- to open or close something by turning a handle
（转动把手）打开（或关闭） - He rolled down his car window and started shouting at them.
他摇下车窗，朝他们大声喊起来。
- He rolled down his car window and started shouting at them.
- to make a rolled piece of clothing, etc. hang or lie flat
展开，铺开，摊开（卷状物） - to roll down your sleeves
捋下袖子
- to roll down your sleeves