Ключевые слова: air, area, atmosphere, building, business, chemical, chimney, climate, cloud, contamination, danger, dioxide, dirty, ecology, emission, environment, environmental, factory, fuel, fume, fumes, gas, generator, grunge, industrial, industry, landscape, manufacturing, nuclear, oil, petrochemical, pipe, plant, pollute, pollution, power, production, refinery, risk, sky, smog, smoke, smokestack, stack, steam, technology, toxic, tube, vapor, waste,