Ключевые слова: anonymous, attend, audience, auditorium, back view, blurred background, briefing, business, businessmen, businesspeople, businesswomen, collaborate, colleague, concentrate, conference, congress, convention, corporate, diverse, education, entrepreneur, event, faceless, forum, global, group, hall, head, indoors, interact, large group of people, lecture, listen, meeting, men, multiethnic, multiracial, occupation, participant, presentation, professional, public, seminar, sit, speaker, together, training, unrecognizable, women, workshop,