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