Ключевые слова: abstract, background, big, building, bulldozer, business, car, carry, cement, concrete, construction, crane, dark, derrick, design, electric, element, engineering, equipment, heavy, hydraulic, icon, illustration, lever, lift, loading, machinery, metal, mobile, mover, rainbow, scraper, set, sign, silhouette, star, strength, strong, symbol, tool, tractor, transport, transportation, truck, vector, vehicle, work, yellow,