Ключевые слова: alert, atomic, attention, background, beware, biohazard, caution, danger, dangerous, design, dirty, hazard, hazardous, industry, label, mark, material, notice, nuclear, old, poisonous, polution, protection, radiation, radioactive, radioactivity, reactor, risk, rusty, safety, sign, stain, symbol, technology, uranium, warning, waste, worn, yellow,