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