Ключевые слова: biology, chemical, confidence, confident, control, crisis, crowd, damage, danger, dangerous, disaster, disease, disinfection, eco, emergency, engineer, environment, environmental, examining, expertise, factory, fog, gas, global, group, grunge, hazard, health, horizontal, hygiene, industrial, industry, laboratory, liquid, male, man, mask, medicine, occupation, one person, person, photo, pollution, problem, protection, purity, recycling, safety, scientist,