Mot-clefs : 即時(shí)通訊___________________，企業(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)________________，金笛短信