rub (sth) off
(sth) (cause sth to) be removed from (a surface) by rubbing (将某物)擦掉
Rub the mud off your trousers. 把你裤子上的泥擦掉.
Who´s rubbed my figures off the blackboard? 谁把我写在黑板上的数字擦掉了?
These stains won´t rub off. 这些污迹擦不掉. rub off (on/onto sb) be transferred (to sb) as a result of sb else´s example 从他人的榜样中汲取到...
Let´s hope some of her patience rubs off on her brother. 希望她的弟弟也能有点她那样的耐性.