Ключевые слова: activity, apartment, architecture, background, blue, building, business, cable, city, close, concrete, construction, crane, development, engineer, engineering, equipment, factory, frame, heavy, high, hoist, hook, house, industrial, industry, iron, lift, lifting, load, machine, machinery, metal, mobile, safety, site, sky, steel, strength, structure, tall, technology, tool, tower, up, urban, vehicle, winch, work, yellow,