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_______，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)____________________，金笛短信