Ключевые слова: activity, big, blue, build, building, business, cable, construction, crane, day, development, elevator, engineering, equipment, exterior, frame, heavy, high, hoist, hoisting, hook, industrial, industry, iron, isolated, large, lift, lifting, machine, machinery, metal, object, orange, outdoor, single, site, sky, steel, strength, structure, tall, technology, tool, tower, transportation, urban, vertical, white, work, yellow,