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