Ключевые слова: architecture, backgrounds, blue, building, business, chemistry, construction, dusk, electricity, engineer, engineering, environment, equipment, factory, finance, fuel, futuristic, gas, gasoline, generation, illuminated, industrial, industry, large, lighting, machinery, manufacturing, many, metal, natural, nature, night, oil, pipe, pipeline, pipes, pollution, power, refinery, science, shiny, steel, structure, supply, technology, tube, view, working,