Ключевые слова: accuracy, analysis, assistant, background, biology, black, clean, clear, clinic, color, defend, discovery, emergency medical care, equipment, experiment, healthcare, help, hospital, illness, in ears, indoors, isolated, job, lab, lying down, material, medical, medicine, modern, no one, no people, nobody, object, occupation, one, prevention, problem, safety, science, sick, silver, single, solution, sound, stop, surface, table, test, tool, work,