Ключевые слова: abstract, atmosphere, back, back to school, blackboard, blurred, board, business, campus, chair, class, classroom, concept, conference, course, defocused, desk, education, elementary, empty, hall, interior, learn, lesson, light, meeting, no people, nobody, not that, primary, reading, room, school, seat, seminar, student, table, teacher, teaching, training, tuition, university, vintage, without,