Ключевые слова: audience, auditorium, business, center, chair, conference, congress, convention, crowd, cultural, culture, display, education, empty, equipment, event, focus, group, hall, indoor, inside, interior, learning, lecture, lecturer, light, listen, listeners, meeting, microphone, modern, new, participants, people, presentation, public, room, row, scene, science, screen, seat, seating, seminar, show, speaker, stage, table, university, visual,