Ключевые слова: air, atmosphere, burn, business, chemical, chemistry, chimney, cloud, contamination, diesel, dirty, ecology, electricity, energy, environment, environmental, factory, fire, flame, fuel, gas, gasoline, generation, golden, gritty, grunge, hazard, industrial, industry, nature, oil, petrol, petroleum, pipelines, pollute, pollution, power, problem, refinery, smog, smoke, station, steel, structure, sunrise, sunset, tank, technology, tower, toxic,