Ключевые слова: 35s, academy, adult, business, caucasian, class, college, course, discussion, education, european, explain, female, french, german, group, indoors, information, knowledge, learning, lecture, lecturer, lesson, listen, listeners, meeting, people, presentation, presents, professional, professor, room, seminar, session, speech, standing, student, studying, talk, teacher, teaching, training, tutorial, university, woman, workshop,