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