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__________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)____________________，手機(jī)(jī)(jī)(jī)端