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)議_____________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_____________，金笛短信