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