キーワード: 即時(shí)(shí)(shí)通訊__________，企業(yè)(yè)(yè)(yè)溝通________，龍笛即時(shí)(shí)(shí)通___，視頻會(huì)議____，集成開發(fā)(fā)(fā)(fā)_________，金笛短信