キーワード: 即時(shí)通訊_______________________________，企業(yè)(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)(fā)_________________，金笛短信