Schlüsselwort: 即時(shí)通訊_________，企業(yè)(yè)(yè)(yè)(yè)(yè)溝通____________，龍笛即時(shí)通_______________，視頻會(huì)議_______________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)_______________，金笛短信