名词
中文翻译：Unknown
同义词：
['rust', 'rusting', 'corrosion']
例句：
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1. The iron nail has developed a layer of rust on the surface.
这个铁钉的表面已经长出了一层锈。
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2. The old car has started to rust, which is a sign of neglect.
这辆旧车开始生锈了，这是忽视的标志。
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3. The metal door is starting to rust, which needs to be repaired soon.
这扇金属门开始生锈了，需要尽快修理。