Ключевые слова: app, application, browsing, campus, carefree, cell, cell phone, cellphone, chatting, colleagues, communication, connection, device, diversity, enjoying, entertainment, friendly, friends, friendship, fun, group, happy, having fun, internet, laughing, meeting, mobile, mobile phone, multiethnic, multiracial, online, online shopping, outside, sharing, smartphone, smiling, social media, students, technology, teen, teenagers, together, using, vertical, watching, young, young adult, youth,