Ключевые слова: adult, assertiveness, audience, auditorium, background, blur, blurred, board, boardroom, business, businessman, colleagues, communication, concept, conference, confidence, confident, congress, consultant, convention, corporate, education, event, executive, happy, man, meeting, men, microphone, people, person, pointing, present, presentation, professional, projector, public, seminar, space, speach, speaker, speech, success, training, white,