Ключевые слова: abstract, adult, agreement, analyze, audience, background, blur, blurred, boardroom, book, business, center, checklist, communication, conference, congress, convention, corporate, design, education, event, group, hall, international, laptop, learn, lecture, light, manager, media, meeting, microphone, modern, note, office, people, person, podium, presentation, public, room, seminar, speaker, speaking, speech, study, tablet,