Ключевые слова: academic, academy, adult, america, audience, auditorium, blurred, business, classroom, coaching, conference, convention, corporate, discussion, education, event, explaining, group, hall, information, institute, investing, knowledge, laptop, learning, lecture, listening, meeting, participant, people, presentation, professional, projector, school, screen, seminar, sitting, speaker, speaking, speech, stock, student, studying, summit, talk, teacher, teaching, training, university, workshop,