Ключевые слова: adult, archive, background, book, bookcase, bookshelf, business, businessman, caucasian, college, computer, concept, designer, desk, diagram, ebusiness, education, hands, higher, indoor, internet, knowledge, laptop, library, literature, male, man, modern, monitor, office, online, person, presentation, public, school, science, screen, shelf, show, showing, student, studying, table, technology, university, wisdom, work, working, young,