Mot-clefs : 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