Ключевые слова: abstraction, alloy, bearing, black, bolt, build, bulldozer, circle, clean, coating, construction, crawler, curve, cut, detail, diesel, dig, drive, engine, equipment, excavator, gear, glint, heavy, industry, internal, iron, large, machine, mechanism, metal, mover, new, nut, paint, part, power, powerful, push, red, roller, shadow, sprocket, steel, strength, technology, tractor, transportation, vehicle, wheel, work, yellow,