Ключевые слова: academy, audience, business, businessman, businesswoman, class, classroom, coaching, colleagues, conference, congress, convention, corporate, crowd, discussion, education, event, explaining, faculty, group, hall, indoors, institute, investor, lecture, lecturer, listeners, listening, man, manager, meeting, people, presentation, professional, public, rear, screen, seminar, sitting, speaker, speech, student, students, study, studying, teacher, teaching, training, university, workshop,