名词
中文翻译：铁锈
同义词：
['rust', 'rusty debris例句：1. The old iron bridge was covered in ferruginous dross.（这座旧铁桥上满是铁锈。）']
例句：
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1. The old iron bridge was covered in ferruginous dross.
这座旧铁桥上满是铁锈。
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2.The car's engine was filled with ferruginous dross.
这辆车的引擎里全是铁锈。
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3.The metal was left to rust for years before it could be cleaned up.
这金属被搁置多年后才能清理干净。