rub something down
phrasal verb with rub verb [ I or T ] uk/rʌb/ us/rʌb/ -bb-
磨平；磨光；把…擦磨干净
to rub something with a rough cloth, brush, or paper until its surface is smooth, or clean and shiny
Rub the wood down with fine sandpaper until it is smooth. 用细砂纸把木头磨光滑。
We rubbed the walls down with soap and hot water. 我们用肥皂和热水把墙面擦干净了。