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1.The old car's engine was covered in a thick layer of tecassir.
这辆旧车引擎上覆盖着厚厚的一层铁锈。
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2. The metal surface has become tecassir over time due to exposure to the elements.
由于暴露在各种元素中，金属表面已经变得铁锈斑斑。
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3. The rusted nails were difficult to remove from the wooden board.
生锈的钉子很难从木板上拔下来。