Ключевые слова: air, atmosphere, black, car, care, combustion, concentration, control, danger, dark, diesel, dirty, disaster, drive, ecology, environment, exhaust, fuel, gas, gasoline, global warming, greenhouse effect, health, hydrocarbon, industry, influence, medical, medicine, negative, oxide, pickup truck, pipe, pm10, pm25, poison, poisoning, polluted, pollution, risk, road, safe, smog, smoke, toxic, toxic air, traffic, transport, transportation, truck, vehicle,