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)(huì)議_______________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)___________________，金笛短信