The irons had tarnished.

这些铁块生锈了。

The tarnish of the silverware is caused by the wet air.

潮湿的空气使得银器毫无光泽。

The children's theft has tarnished the reputation of the school.

孩子们的偷窃行为使学校的声誉受损。

By this time a series of scandals had severely tarnished the candidate's reputation.

到这时 一连串的丑闻已使这名候选人的名誉大大受损

The affair could tarnish the reputation of the senator.

这一事件可能有损那位参议员的名声。

Air and moisture tarnish silver.

空气和潮湿使银子失去光泽。

It will tarnish less and so keep it shine.

它会破坏较少，所以保持光泽。

The damp atmosphere tends to tarnish the brass taps.

潮湿的空气容易使黄铜龙头失去光泽。

Almost immediately, the tarnish will begin to disappear.

很快，暗淡开始消失了。