Ключевые слова: blue, building, bulldozer, business, clear, construction, crane, development, digging, earth, engine, engineer, engineering, equipment, excavation, expertise, gravel, heavy, horizontal, industrial, industry, isolated, land, landscapes, large, loading, machine, machinery, mine, mover, one, over, pipe, pit, plant, power, progress, rough, scoop, sized, sky, strength, track, transportation, vehicle, view, working, yellow,