Ключевые слова: adult, american, binocular, caucasian, center, chemist, closeup, danger, decision, doctor, ecologist, equipment, experiment, experimenting, flu, future, glasses, glassware, health, hospital, infection, instrument, lab, laboratory, looking, male, man, perspective, pharmaceutical, pharmacology, pharmacy, physician, predict, profession, professional, protective, reagents, research, safety, science, scientific, scientist, search, specialist, successful, treatment, uniform, vaccine, wear, work,