キーワード: 即時(shí)(shí)(shí)通訊_______________，企業(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)____________，金笛短信