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