升级换代的英文:
(domestic industries gradually) upgrade and renew themselves

domestic是什么意思
adj. 家庭的;热心家务的;国内的;驯养的
n. 仆人,佣人

  • A servant, especially a domestic servant.
    佣人仆人,尤指家仆
  • The pig is a domestic animal.
    猪是一种家畜。
  • It was a scene of such domestic bliss.
    这是一派天伦之乐的场景。
industries是什么意思
n. 企业,行业;【总称】工业;勤勉,勤奋;

  • primary industry,secondary industry,tertiary industry
    第一产业、第二产业、第三产业
  • learned industriousness
    习得勤奋性
  • Industrial research is the province of the Department of Trade and Industry.
    工业研究属贸易和工业部的职责范围。
gradually是什么意思
adv. 逐步地,渐渐地,渐进的

  • But that climb will be gradual.
    但是,这个攀升将是平缓的。
  • The muddy river cleared gradually.
    污浊的河流渐渐变清了。
  • To gain entrance gradually or surreptitiously.
    渗透逐渐地或秘密地获得进入权

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