Mot-clefs : 即時(shí)(shí)通訊_______________________，企業(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(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)____，手機(jī)(jī)端