Ключевые слова: academy, background, blurred, blurry, board, chair, chalkboard, class, classroom, college, concept, defocused, desk, desks, education, empty, floor, furniture, high, indoors, inside, interior, knowledge, learn, learning, lecture, lesson, middle, modern, nobody, private, public, room, school, seat, seminar, students, study, table, teacher, teaching, training, university, view, wood, wooden, workplace, workspace,