キーワード: 即時(shí)(shí)通訊_________________，企業(yè)(yè)(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)(fā)(fā)__________________________，金笛短信