Metal ceiling applied in the past for more public, office space.

金属吊顶在从前更多的应用于公共、办公场所。

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The office had collected a blue layer of cigarette smoke near the ceiling.

办公室天花板下聚集了一层蓝色的香烟烟雾。

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The office had collected a blue layer of cigarette smoke near the ceiling.

办公室天花板下聚集了一层蓝色的香烟烟雾。

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