キーワード: 即時(shí)通訊_________________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通________________，龍笛即時(shí)通____________，視頻會議________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)_______________，金笛短信