Schlüsselwort: 即時(shí)(shí)通訊______________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通__________________，龍笛即時(shí)(shí)通______，視頻會(huì)(huì)議________________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_______________，金笛短信