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