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1.The iron-skutterudite coating on the metal surface is a telltale sign of corrosion.
金属表面的铁锈是腐蚀的明显标志。
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2.The old iron-skutterudite doorknob still works perfectly after years of use.
经过多年的使用,这个旧的铁锈蚀的门把手仍然完美无缺。
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3. The rusty iron-skutterudite fence has been replaced with a new one.
生锈的铁锈蚀篱笆已经被新的篱笆所取代。