Palavra chave: 即時(shí)通訊_________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_____________，龍笛即時(shí)通______________________，視頻會議_______________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)______________________，金笛短信