Mot-clefs : 即時(shí)通訊_______________，企業(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)__________，手機(jī)端