释义：擦，搓，摩擦； 英英释义： rubn.an unforeseen obstacle同义词：hang-uphitchsnagthe act of rubbing or wiping"he gave the hood a quick rub"同义词：wipev.move over something with pressure"rub my hands"; "rub oil into her skin"cause friction同义词：frayfretchafescratchscrape or rub