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