Ключевые слова: activity, architecture, bar, blue, build, cement, concrete, construct, construction, development, dusk, engineering, equipment, floor, foundation, hard, heavy, high, industrial, industry, iron, material, metal, morning, new, orange, pattern, pile, plate, purple, rack, reinforce, reinforcement, rod, rust, rusty, safety, scaffold, site, sky, steel, strength, structure, sunrise, sunset, technology, up, urban,