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