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