及物/不及物动词（通常指金属）（使）失去光泽，（使）变灰暗

及物动词玷污，败坏

名词污点，瑕疵; 无光泽，晦暗

1. 七彩网.英语单词

及物动词

1. Air and moisture tarnish silver.
空气和潮湿使银子失去光泽。

2. The scandal tarnished his reputation.
丑闻败坏了他的名誉。

3. His reputation was tarnished.
他的声誉受到玷污。

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. 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

七彩网·英语单词

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.

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。