vt.& vi.（通常指金属）（使）失去光泽，（使）变灰暗；vt.玷污，败坏；n.污点，瑕疵；无光泽，晦暗； 变形： 复数：tarnishes过去式：tarnished过去分词：tarnished现在分词：tarnishing第三人称单数：tarnishes 英英释义： tarnish[ 'tɑ:niʃ ]n.discoloration of metal surface caused by oxidationv.make dirty or spotty, as by exposure to air; al