Mot-clefs : 即時(shí)通訊____________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通____________________，龍笛即時(shí)通____，視頻會議_______________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)_________，金笛短信