Ключевые слова: back, background, blue, building, bulldozer, closer, concept, construction, countryside, development, digger, dirt, earth, engineering, equipment, excavation, farming, field, foreground, ground, group, hard, heap, heavy, hydraulic, industrial, land, landscape, large, loader, machine, machinery, mover, nature, others, quarry, road, rural, sand, scoop, site, sky, soil, tractor, transportation, truck, vehicles, wheel, working, yellow,