Palavra chave: 即時通訊_______，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通____________________________，龍笛即時通_________，視頻會議________________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)______________，金笛短信