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1.The old iron gate is covered in a thick layer of ferricrust.
那把旧铁门上覆盖着厚厚的一层铁锈。
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2.The paint on the metal surface has turned into ferricrust after years of exposure to the elements.
金属表面经过多年暴露于各种元素后，已经变成了铁锈。
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3.The rusted nails were difficult to remove from the wooden floor.
生锈的钉子很难从木质地板上拔下来。