キーワード: 即時(shí)(shí)(shí)(shí)(shí)(shí)通訊____，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通__，龍笛即時(shí)(shí)(shí)(shí)(shí)(shí)通_____________，視頻會(huì)(huì)(huì)(huì)(huì)(huì)議_____________，集成開(kāi)(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)________________，金笛短信