And now, mankind society is transiting from the age of industrial economy to the age of economy based on knowledge step by step.

　
英 美
  • 現在，人類(lèi)社會(huì )正逐步由工業(yè)經(jīng)濟時(shí)代向知識經(jīng)濟時(shí)代過(guò)渡。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan