Ключевые слова: adult, barrier, business, car, casual, caucasian, city, connection, coronavirus, device, distance, epidemic, europa, europe, female, health, holding, indoor, internet, lifestyle, line, male, man, message, metro, metropolitan, mobile, online, passenger, person, phone, positive, quarantine, seat, sitting, smartphone, station, subway, subway car, surfing, technology, tourist, train, transport, transportation, trip, underground, urban, using, woman,