It never rusts or tarnishes.

它从不生锈，也不会失去光泽。

柯林斯例句

Brass tarnishes quickly in wet weather.

天气潮湿时黄铜很快会失去光泽.

《简明英汉词典》

This metal tarnishes easily.

这种金属易变色.

互联网

If the plate tarnishes, you can rub it up a little and bring back its shine.

如果盘子失去光泽, 你可以稍为擦试一下,使其恢复光泽.

互联网

Also, there is no shortage of it in China, which tarnishes its allure.

而且, 中国也不缺少铝, 这使得铝业务失去了吸引力.

互联网