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