除旧更新

  • na.exchange the old for the new
  • 网络replace the old with the new

除旧更新除旧更新

除旧更新

replace the old with the new

百度词典搜索_更 ... make changes in; 变更 replace the old with the new; 除旧更新 change over to new ways 改弦更张 ...

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