Ключевые слова: audience, auditorium, business, center, chair, class, classroom, concert, conference, congress, convention, corporate, culture, education, educational, empty, event, finance, hall, indoor, information, inside, interior, learn, lesson, light, meeting, modern, new, nobody, office, presentation, professional, public, room, row, scene, school, seat, seating, seminar, show, stage, university, visual, work,