Ключевые слова: analysis, biochemistry, biology, biotechnology, care, chemical, chemist, chemistry, color, construction, doctor, engineer, engineering, equipment, experiment, health, hospital, icon, illustration, industry, lab, laboratory, line, liquid, man, medical, medicine, microscope, oil, people, plant, professional, refinery, research, researcher, science, scientific, scientist, sign, study, symbol, synthesis, technician, technology, test, tube, woman, work,