Ключевые слова: academic, briefing, business, businessman, coaching, conference, conference hall, conference room, congress, convention, convention center, cooperation, corporate, event, gesturing, group, growth, indoors, information, institute, knowledge, learn, lecture, lecture hall, lecturer, listeners, man, manager, meeting, participants, people, presentation, professional, public, room, screen, seminar, sitting, speaker, speech, study, studying, teacher, teaching, training, university,