キーワード: 即時(shí)通訊__________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通________，龍笛即時(shí)通__________________________，視頻會(huì)議_______________________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_________________，金笛短信