tarnish

noun

1. discoloration of metal surface caused by oxidation

tarnish的近义词

verb

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

e.g. The silver was tarnished by the long exposure to the air
Her reputation was sullied after the affair with a married man

Synonym: stainmaculatesullydefile

1. 玷污，败坏，损害(名誉或形象)
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.

tarnish是什么意思

e.g. The affair could tarnish the reputation of the prime minister...
这一事件可能有损首相的名誉。
e.g. His image was tarnished by the savings and loan scandal.
他的形象因为那桩储蓄信贷丑闻而受损。

2. (使)有污迹;(使)失去光泽;(使)变暗淡
If a metal tarnishes or if something tarnishes it, it becomes stained and loses its brightness.

e.g. It never rusts or tarnishes...
它从不生锈，也不会失去光泽。
e.g. Wear cotton gloves when cleaning silver, because the acid in your skin can tarnish the metal.
清洁银器时要戴上棉手套，因为你皮肤里的酸性物质会使它失去光泽。

3. 锈斑;污点
Tarnish is a substance which forms of the surface of some metals and which stains them or causes them to lose their brightness.

e.g. The tarnish lay thick on the inside of the ring.
戒指内侧有一层厚厚的锈斑。

1. 变色：浸镀银层在空气中碰到微量的硫气时即容易变色(Tarnish),为了防变色以及防止银金属的快速迁移(Leaching)甚至破坏绝缘起见,刻意在浸银层表面上生成一薄层有机性保护膜,以堵绝此等缺失.

2.

2. 金属变色：16 硬度 hardness | 17 金属变色 tarnish | 18 点滴腐蚀试验 dropping corrosion test

3. 变暗：target 标志 | tarnish 变暗 | tarragon oil 龙蒿油