Ключевые слова: activity, background, blade, blue, bulldozer, construction, development, dig, dirt, dump, dumper, earth, earthmoving, excavate, excavation, excavator, field, gravel, ground, heavyduty, industrial, industry, large, load, loader, machine, machinery, old, pit, power, quarry, road, rock, sand, shovel, site, sky, soil, stone, truck, unloading, vehicle, work, yellow,