R字开头的单词或词组
rawrollingrevisionroderecallrevenueruderivalreceptionistRECreact toretrieverashremitradicalring uprange from...to...rebornrecognitionrun overrelate torelationshipretiredreliveresidentreinforcerubbishrefundretirerevolutionaryrepremakeReutersrendezvousrobotreedrelaxedreliablerelyrun awayrefers toromanticism