Schlüsselwort: 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