A continuous layer of building material, such as brick or tile, on a wall or roof of a building.

层，列，排：建筑材料的连续一层，如建筑物的墙壁或屋顶上的砖或瓦。

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A continuous layer of building material, such as brick or tile, on a wall or roof of a building.

层，列，排：建筑材料的连续一层，如建筑物的墙壁或屋顶上的砖或瓦。

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