Mot-clefs : 即時(shí)通訊_____，企業(yè)(yè)(yè)(yè)(yè)(yè)(yè)(yè)溝通_____________，龍笛即時(shí)通________________________，移動(dòng)辦公_____________________，集成開發(fā)(fā)(fā)(fā)(fā)(fā)(fā)(fā)