Ключевые слова: activity, apartment, architecture, background, blue, building, built, business, cement, city, concrete, construction, crane, development, engineer, engineering, equipment, estate, exterior, flat, frame, high, hoist, home, house, housing, industrial, industry, machinery, modern, mortgage, new, project, property, reinforcement, residential, scaffolding, site, sky, skyscraper, steel, structure, tall, technology, tower, urban, wall, work, worker,