キーワード: 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)_____________，金笛短信