Ключевые слова: adult, beard, black, book, book literature, bookshelf, bookstore, college, concentration, connection, desk, device, education, elderly, gray, guy alone, indoors, knowledge, knowledge learn, learn, library, lifestyle, male, man, occupation, old, pen, people, person, portrait, prepare, project communication, reading, research, research academic, retired, school, serious, shelf, sitting, study, studying, table, technology, teen, working, write, young,