Ключевые слова: adult, analysis, analyzing, beaker, biology, blue, caucasian, chemical, chemistry, clinical, concentration, concept, determination, discover, education, equipment, experiment, expertise, glass, glasses, glassware, glove, hand, holding, human, indoors, investigation, lab, laboratory, liquid, medical, medicine, men, microbiology, occupation, people, pharmaceutical, precision, professional, protective, sample, science, scientific, scientist, solution, standing, test, tube, vertical, working,