Mot-clefs : 即時通訊_____________，企業(yè)(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)(fā)____________________，金笛短信