キーワード: 即時(shí)(shí)(shí)通訊________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通__________，龍笛即時(shí)(shí)(shí)通_________________，視頻會(huì)議______，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)___________________，金笛短信