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