Schlüsselwort: 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