Mot-clefs : 即時(shí)(shí)通訊___________________，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通______________，龍笛即時(shí)(shí)通_______________________，移動(dòng)(dòng)辦公_______________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)