Ключевые слова: apartment, architect, arranging, background, block, blue, building, built, column, concrete, construction, contemporary, danger, development, engineering, equipment, erect, estate, exterior, form, frame, girder, gray, growth, hard, horizontal, house, housing, industry, machinery, new, outdoor, roof, safety, site, sky, skyscraper, steel, strength, structure, tower, vertical, working,