Rub off 和rub away 区别rub off (使)摩擦掉a shame does not rub off.耻辱无法抹灭。she couldn't rub off the blood stain on her blouse.她没法将上衣的血渍擦掉。 (使)减色with the passing of. Rub,scrape,wipe,mop,scratch这几个单词都有擦的意思，但是不同的是什么？擦 [cā]动词（摩擦） rub:strike a match;擦根火柴rubbing one's hands together;摩拳擦掌just a scratch on the hand. Rub one's hands 是什么意思rub one's hands (因高兴、不知所措等)搓自己的双手
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