Ключевые слова: black, blackboard, blue, board, bright, business, chair, class, classroom, college, conference, desk, desktop, education, educational, empty, equipment, furniture, glass, horizontal, image, indoors, interior, keyboard, learn, lecture, lesson, metal, modern, nobody, office, perspective, room, row, school, seat, seminar, study, table, technology, training, university, white, window, wood,