Ключевые слова: arm, barrel, black, blue, business, chemical, chemist, chemistry, classification, container, danger, drum, ecology, energy, environment, environmental, factory, fluid, freight, fuel, gallon, garbage, gasoline, hand, hazardous, industrial, industry, laboratory assistant, liquid, manufacturing, material, metal, oil, pallet, plant, plastic, pollution, power, radioactive, risk, safety, steel, storage, technologist, test tube, toxic, transportation, tube, verification, warehouse,