rub off

擦掉，磨去

royalist, royally, royalty, rpm, RRP, RSA, RSC, RSM, RSPB, RSPCA, RSV, RSVP, Rt Hon, Rt Rev (also Rt Revd), RU, rub, rub (sb/oneself/sth) down, rub (sth) off, rub away, rub down, rub out, rub sb out, rub sth in/into sth, rub sth up, rubber, rubber goods, rubber plant, rubber stamp, rubber-neck, rubber-stamp, rubberize, rubberise, rubbery, rubbing, rubbish, rubbishy, rubble, rubella, Rubicon, rubicund, rubric,