Ключевые слова: architecture, background, blue, bridge, building, business, cement, city, concrete, construction, crane, design, development, earth, engineer, engineering, equipment, fragment, happy, heavy, highway, industrial, industry, landscape, machine, machinery, man, modern, new, orange, outdoor, reconstruction, road, safety, scaffolding, site, sky, smile, steel, stone, structure, support, technology, traffic, transportation, under, view, work, worker, yellow,