Mot-clefs : 即時(shí)通訊_______，企業(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)_______，金笛短信