Ключевые слова: background, bulldozer, cement, child, childhood, closeup, concrete, concretemixer, construction, contractor, drive, equipment, fun, game, heavy, hydraulic, industrial, industry, isolated, kid, loader, lorry, machine, machinery, made, mix, mixer, mixing, model, object, outline, plastic, play, red, roller, site, small, texture, toy, tractor, traffic, transport, transportation, truck, variety, vehicle, wheel, wood, work, yellow,