Ключевые слова: america, architecture, background, balance, blue, boom, build, building, business, cable, chicago, city, cloud, color, construction, construction crane, crane, day, development, engineering, equipment, high, hoisting, illinois, industry, infrastructure, lifting, load, low angle, machinery, object, occupation, outdoors, project, real estate, red, site, sky, spring, springtime, steel, structure, urban, usa, weight, work,