Create a new white layer and place it in the bottom. Layer > New fill layer > Solid color.

创建新的空白层,并将其置于底部. 对它执行图层>新建填充涂层>纯色(白色——译者注).

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The surface of the concrete floor was coated by a white layer of slaking - lime.

“混凝土”地面涂有白色饰面,饰面是以石灰浆涂刷而成.

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