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