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)(kāi)發(fā)(fā)(fā)(fā)(fā)(fā)(fā)____________，金笛短信