Ключевые слова: academic, audience, back, briefing, business, businessman, conference, congress, convention, cooperation, corporate, education, educator, entrepreneurship, event, explaining, group, hall, indoors, information, institute, knowledge, learn, lecture, lecturer, male, man, manager, meeting, microphone, participants, people, podium, presentation, professional, public, room, screen, seminar, speaker, speech, study, studying, talk, teacher, teaching, training, university,