Ключевые слова: backgrounds, brown, buildings, bulldozer, car, caterpillar, clay, color, construction, digging, dirt, dirty, earth, employment, equipment, footprint, gravel, heavy, industrial, industry, land, large, machine, machinery, mover, mud, on, outdoors, quarry, sand, scoop, shape, site, technology, textured, track, tractor, working, yellow,