名词
中文翻译：Unknown
同义词：
['permanent coating', 'permanent lining', 'permanent sealant例句：1. The roof of the building has a permanent lining made of asphalt.（这座建筑的屋顶有一个由沥青制成的永久衬里。）']
例句：
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1. The roof of the building has a permanent lining made of asphalt.
这座建筑的屋顶有一个由沥青制成的永久衬里。
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2.The car's body has a permanent lining that keeps it from rusting.
这辆车的车体有一个永久衬里，防止生锈。
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3. The floor is lined with a permanent lining to prevent moisture from seeping in.
地板被一个永久衬里覆盖，以防止水分渗透。