Ключевые слова: adult, beaker, biology, black, chemical, chemist, chemistry, coat, color, colorful, concepts, doctor, education, equipment, experiment, eyewear, face, flask, gas, glass, glassware, hair, hand, holding, horizontal, human, isolated, laboratory, liquid, male, man, medical, medicine, person, pharmacy, professor, research, sampling, science, scientific, scientist, smoke, technician, technology, test, toxic, tube, virus, working,