Mot-clefs : 即時(shí)通訊____________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通____________________，龍笛即時(shí)通_____________________，視頻會(huì)議_____________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)____________，手機(jī)端