Ключевые слова: activity, background, blue, break, bucket, building, bulldozer, construction, crawler, dig, digger, dirt, earth, earthwork, equipment, excavation, excavator, gravel, ground, heavy, hydraulic, industrial, industry, loader, machine, machinery, mine, move, mover, outdoors, power, quarry, sand, scoop, shovel, site, sky, soil, tractor, vehicle, work, yellow,