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)議_______________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)____，金笛短信