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