Ключевые слова: academic, audience, briefing, business, businessman, coaching, conference, congress, convention, cooperation, corporate, crowd, education, educator, event, explaining, forum, gesturing, group, hall, indoors, information, institute, knowledge, learn, lecture, lecturer, male, man, manager, meeting, participant, person, presentation, professional, public, room, screen, seminar, sitting, speaker, speech, study, studying, teacher, teaching, team, training, university, workshop,