Ключевые слова: air, atmosphere, burning, chemical, chimney, climate agreement, coal, dangerous, dark, dirty, ecology, energy, environment, environmental, export, factory, foundry, fuel, gas, global, global warming, growth, industrial, industry, manufacturing, natural, petrochemical, pipe, pipes, plant, pollution, pollution city, power, sky, smog, smoke, smokestack, spill, station, steam, stripes, technology, tower, toxic, view, warming, workhouse,