Ключевые слова: business, businessman, calculator, change, chat, communication, computer, concept, connection, contact, conversation, discussion, email, equipment, exchange, global, group, internet, laptop, mail, meeting, message, microphone, mobile, network, notebook, office supplies, pen, people, person, phone, ruler, signs, smart, speaker, speech, subscription, talk, team, teamwork, technology, unity, wireless, working,