paving material

护面材料

例句与用法：

A naturally rounded paving stone.

圆石块自然形成的圆形铺路石头

A molded rectangular block of clay baked by the sun or in a kiln until hard and used as a building and paving material.

砖块在太阳下或窑里烘烤变硬的模制长方形黏土砖，用作建房和铺路的材料

Mixed asphalt and crushed stone gravel or sand, used for paving or roofing.

沥青混泥土碎石或沙子与沥青的混合物，用于铺路或封层顶