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)