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(huì)(huì)議_______________________，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)_______________，金笛短信