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