Palavra chave: 即時(shí)通訊______________________，企業(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)_________，金笛短信