Ключевые слова: academic, adolescence, audience, briefing, business, business people, city street, coaching, concentrated, concert party, conference, congress, convention, course, discussion, diverse, education, event, explain, female, group, learning, lecture, lesson, listening, male, meeting, night cinema, outdoors, park, people, presentation, professional, science, seminar session, serious, showing, speaker, startup leader, students, study, talk, teach, teenager, theater scene, training speech, university, watching, young, young adult,