Mot-clefs : 即時(shí)通訊_______，企業(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)______，手機(jī)(jī)(jī)端