キーワード: 即時(shí)(shí)通訊___________，企業(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)_______，金笛短信