Palavra chave: 即時(shí)通訊__________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通__________________，龍笛即時(shí)通____________________，視頻會議_________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)_____________，金笛短信