Ключевые слова: background, backhoe, blue, boy, building, bulldozer, business, business constructin, car, construction, development, earth, engineering, environment, equipment, excavation, excavator, farm, field, heavy, industry, isolated, kid, landscape, little, machine, machinery, mover, nature, old, outdoors, sand, silhouette, site, sky, sun, sunset, toy, tractor, truck, vehicle, wheel, white, work, yellow,