キーワード: 即時(shí)通訊____________，企業(yè)(yè)(yè)(yè)(yè)(yè)溝通___________，龍笛即時(shí)通_______，視頻會(huì)議____________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)____________，金笛短信