Palavra chave: 即時(shí)(shí)通訊________________，企業(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)____________________，金笛短信