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