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