Ключевые слова: adult, alone, biology, breakthrough, career, caucasian, chemist, chemistry, discovery, equipment, experiment, expert, handsome, happiness, happy, indoors, innovation, inside, job, lab, laboratory, looking, male, man, mature, microscope, occupation, people, portrait, positive, positivity, profession, professional, professionalism, research, sample, science, scientific, scientist, skills, smile, smiling, specialist, study, studying, technology, test, testing, work, working,