キーワード: 即時(shí)(shí)通訊______________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通______________，龍笛即時(shí)(shí)通___________________，視頻會議_____________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)_______，金笛短信