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