關(guān)鍵字: 即時(shí)(shí)通訊______________，企業(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)