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Ключевые слова:
audience, auditorium, back, blurred stage, business, business seminar, businessman, conference, congress, convention, corporate, corporate event, dark, education, educational, engaged participants, entertainment, event, focused, gathering, group, hall, head, keynote speech, learning, lecture, lecture hall, man, manager, meeting, people, performance, presentation, professional, professionals, public, seminar, show, silhouette, sitting, speaker, speech, stage, teaching, training, workshop,