キーワード: 即時(shí)(shí)(shí)通訊________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通______________，龍笛即時(shí)(shí)(shí)通___________，視頻會(huì)(huì)(huì)議____________________________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_____________，金笛短信