Mot-clefs : 即時(shí)通訊______________，企業(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)__________________，金笛短信