Palavra chave: 即時(shí)通訊________，企業(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)_____________，金笛短信