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.
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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.
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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.
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