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
