Ключевые слова: activity, big, bulldozer, construction, development, dig, digger, dirt, earth, equipment, excavate, excavating, excavation, excavator, ground, heavy, hydraulic, industrial, industry, large, loader, machine, machinery, metal, mine, mover, power, quarry, quarry equipment, sand, scoop, shovel, site, sky, track, tractor, transport, vehicle, work, yellow,