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