關鍵字: 即時(shí)(shí)(shí)通訊___________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通___________，龍笛即時(shí)(shí)(shí)通______________，視頻會(huì)(huì)(huì)議_______，集成開(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)__________________，金笛短信