Ключевые слова: active, activity, african, american, apartment, architecture, assembling, blue, builder, building, buildings, business, cement, clear, clouds, concrete, construct, construction, development, elevation, engineering, equipment, erect, foundation, growth, high, industrial, industry, infrastructure, iron, job, large, low, male, metallic, new, occupation, person, project, scaffolding, site, sky, steel, structure, tall, urban, work, worker, working, workplace,