Ключевые слова: blue, chemical, chemistry, chimney, construction, economy, energy, engineer, engineering, environment, equipment, factory, fuel, gas, gasoline, heavy, industrial, industry, light, manufacturing, modern, nature, oil, petrochemical, petroleum, pipe, pipeline, plant, pollutant, pollute, pollution, production, refine, refinery, river, sky, smoke, steam, storage, structure, sustainability, sustainable, tank, technology, tower, twilight, water, worker,