Schlüsselwort: 即時(shí)(shí)通訊_________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_________________________，龍笛即時(shí)(shí)通_____________________，視頻會議________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)_______________，金笛短信