Ключевые слова: 2530, 30s, academic, activities, adult, american, attention, audience, briefing, business, career, center, coaching, communication, conference, confident, congress, corporate, course, diversity, education, engagement, female, french, group, hall, information, intelligence, interior, learning, lecture, multiethnic, participants, people, person, portrait, positive, presentation, professional, public, spectator, study, training, white, woman, working, young,