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