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