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