Ключевые слова: background, barrel, blue, chemical, chemistry, color, container, crude, danger, dirty, drops, drum, dump, ecology, empty, energy, environment, factory, fossil, fuel, gallon, gasoline, hazard, hazardous, industrial, industry, isolated, liquid, metal, oil, old, petroleum, recycling, rust, safety, shape, spill, steel, storage, tank, toxic, waste, white,