Palavra chave: 即時(shí)通訊______________，企業(yè)(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)(fā)_________________________，金笛短信