Ключевые слова: activity, background, blue, break, bucket, building, bulldozer, color, construction, crawler, day, demolition, development, dig, digger, dirt, earth, earthwork, equipment, excavation, excavator, gravel, ground, heavy, hydraulic, industrial, industry, job, loader, machine, machinery, mine, move, mover, nobody, outdoors, power, quarry, rest, sand, scoop, shovel, site, sky, soil, tractor, urban, vehicle, work, yellow,