名词
中文翻译：锈
同义词：
['tarnish', 'oxidation']
例句：
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1. The old car has a lot of rust on its body.
这辆旧车车身有很多锈。
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2. The metal was exposed to the elements for too long, causing it to rust.
金属暴露在元素中太久，导致它生锈。
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3. Rust is a natural process that occurs when iron objects come into contact with oxygen and moisture.
锈是一种自然过程，当铁制品与氧气和水分接触时会发生。