tarnishing

Moisture leads to the tarnish of the silverware.

湿气使得银器毫无光泽。

Eight alloys were measured before and after tarnish by chromometer.

探讨低贵合金变色的影响因素。

His bad behaviour has tarnished the good name of the school.

他轨, 败坏了学校的誉。

Brass tarnishes quickly in wet weather.

天气潮湿时铜很快会失去光泽。

His reputation was tarnished.

他的誉受到。