Ключевые слова: activity, background, backhoe, big, blue, bucket, build, building, bulldozer, close, construction, development, dig, digger, dirt, earth, engineering, equipment, excavate, excavating, excavation, excavator, ground, heavy, hydraulic, industrial, industry, loader, machine, machinery, metal, mine, mover, outdoors, power, quarry, sand, scoop, shovel, site, sky, soil, steel, tractor, transportation, vehicle, white, work, yellow,