tarnish

音标发音

The tarnish lay thick on the inside of the ring.
戒指內側有一層厚厚的鏽斑。
Moisture leads to the tarnish of the silverware.
溼氣使得銀器毫無光澤.
Wear cotton gloves when cleaning silver, because the acid in your skin can tarnish the metal.
清潔銀器時要戴上棉手套，因爲你皮膚裡的酸性物質會使它失去光澤。
The tarnish lay thick on the inside of the ring.
戒指內側有一層厚厚的鏽斑。
Wear cotton gloves when cleaning silver, because the acid in your skin can tarnish the metal.
清潔銀器時要戴上棉手套，因爲你皮膚裡的酸性物質會使它失去光澤。

(METAL) to make or (especially of metal) become less bright or a different colour
(GOOD OPINION) to make people think that someone or something is less good

If you say that something tarnishes someone's reputation or image, you mean that it causes people to have a worse opinion of them than they would otherwise have had.
tarnished
If a metal tarnishes or if something tarnishes it, it becomes stained and loses its brightness.