キーワード: 即時(shí)通訊__________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通________________________，龍笛即時(shí)通___________________，視頻會(huì)議_________________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)__________________________，金笛短信