Ключевые слова: activity, apartment, architecture, block, blue, buildings, built, cement, concrete, construction, crane, development, district, elevation, engineering, equipment, exterior, form, frame, growth, heavy, high, home, housing, industry, machine, machinery, modern, new, ownership, part, picking, pole, raising, reinforcement, safety, scaffold, screws, site, sky, skyscraper, steel, strong, structure, tall, tower, unfinished, up, upgrade, urban,