キーワード: 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