Mot-clefs : 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