Mot-clefs : 即時通訊______________________________，企業(yè)(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)(fā)_______________，金笛短信