Ключевые слова: architect, architecture, background, blue, build, building, business, cement, concrete, construct, construction, contractor, crane, development, engineer, engineering, equipment, estate, foundation, high, house, industrial, industry, iron, labor, lift, machine, men, metal, occupation, people, plan, professional, progress, project, protection, safety, site, sky, steel, structure, tower, unfinished, urban, work, worker, yellow,