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