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