Mot-clefs : 即時通訊___________________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通____________________，龍笛即時通_______________，視頻會議_______________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)__________，金笛短信