Mot-clefs : 即時通訊___________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通___________________，龍笛即時通___________________，視頻會議_____________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)__________，金笛短信