rub off片语动词KK [rʌb ɔf] /ɹʌb ɔf/发音片语动词1擦掉、擦去、抹掉可拆开Rub the pencil marks off before you hand in the drawing.交出图画之前先把铅笔的痕迹擦掉。2脱落、磨掉、掉色The gold coating on the ring rubbed off within a few months.戒指上的镀金几个月内就磨掉了。3感染、影响、传染常与 on 连用Her enthusiasm for reading soon rubbed off on the whole class.她对阅读的热情很快就感染了全班。用这个字练口说→