Ключевые слова: aperture, black, construction, control, covered, design, drainage, empty, erosion, filled, foundation, geo, greenery, grid, ground, hill, hook, industrial, industry, infused, leak, management, material, mesh, mountain, nobody, photo, plastic, polyester, prevent, protection, protective, roadway, safety, sand, scene, shield, side, sliding, slip, slope, stability, surface, technology, terrain, using, wire,