Ключевые слова: academy, adult, african, american, anonymous, black, business, casual, caucasian, center, class, classroom, closeup, college, computer, concept, course, cropped, desk, desktop, diverse, education, female, group, internet, learning, library, line, male, man, multiracial, office, online, pc, people, row, side, sitting, student, studying, table, technology, trainee, training, university, using, view, woman, work, young,