Ключевые слова: change, chemical, climate, condition, connection, contamination, cool, disaster, dusk, electricity, end, engineering, exploration, factory, flowing, fossil, fuel, gas, gasoline, glasses, global, graffiti, group, grunge, heat, heavy, horizontal, huge, liquid, machine, network, no people, oil, pollution, power, problem, production, pump, refinery, splash, spray, stream, structure, supply, time, toxic, transportation, tube, warming,