Schlüsselwort: 即時(shí)通訊_________________________，企業(yè)(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)(fā)______________________，金笛短信