动词 tarnish:

1. make dirty or spotty, as by exposure to air; also used metaphorically

tarnishn.晦暗；污渍v.沾污tarnish resistance抗蚀力,耐蚀性tarnishproof board防晦暗纸板tarnishproof paper防晦暗纸tarnishing reaction锈蚀反应tarnish-resistantadj.光泽性的；耐变晦性的tarnished reputation被败坏的名誉tarnish one's honorsv.分成音节；读出各个音节tarnish of tin coating锡面变色tarnish sb's reputation音节理论tarnish resisting alloy抗变色合金

1. The firm's good name was badly tarnished by the scandal.
   这件丑事玷污了公司的好名声。