Ключевые слова: activity, background, backhoe, blue, bucket, bulldozer, construction, development, dig, digger, dirt, earth, equipment, excavate, excavating, excavation, excavator, field, ground, heavy, hill, hollow, hydraulic, industrial, industry, large, loader, machine, machinery, metal, mine, mining, mountain, mover, one, orange, outdoors, power, quarry, red, sand, scoop, shovel, site, sky, soil, tractor, vehicle, work, yellow,