Palavra chave: 即時(shí)(shí)(shí)(shí)通訊__________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_______________，龍笛即時(shí)(shí)(shí)(shí)通_____________，視頻會(huì)議________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)________________，金笛短信