Ключевые слова: air pollution, built structure, business, car, chemical, chimney, color image, crude oil, cut out, electricity, environment, equipment, factory, fuel and power generation, fuel pump, gas, gas station, gas tank, gasoline, horizontal, icon, industry, land vehicle, mode of transport, no people, oil industry, pipe tube, plant, pollution, power supply, refinery, service, sign, sky, smoke physical structure, social issues, station, sweden, symbol, tanka, technology, tower, transportation,