Ключевые слова: absence, analyzing, biology, biotechnology, blue, care, chemical, chemistry, closeup, color image, computer, control, doctor, empty, equipment, europe, expense, eye, eyesight, factory, healthcare and medicine, horizontal, hospital, illness, indoors, industry, laboratory, liquid, manufacturing, medicine, modern, no people, optometrist, order, plant, portrait, recycling, remote control, research, safety, science, surgery, switzerland, technology, thailand, water, working,