Schlüsselwort: 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