Ключевые слова: adult, audience, business, cell, cellphone, chart, colleagues, conference, corona, coronavirus, covid19, education, epidemic, explaining, forum, group, hall, hands, holding, indoors, infection, lecture, lecturer, listeners, listening, live, meeting, mobile, pandemic, participants, people, person, phone, photo, presentation, professional, public, quarantine, screen, seminar, sitting, smart, smartphone, speaker, taking, technology, video, virus, woman,