キーワード: 即時(shí)(shí)通訊______________，企業(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)_______________，金笛短信