四、产品退回升级 (Return for Upgrade) 五、产品退回再生 (Return for Recycling)
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return for upgrade
返回升级
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Arbitrarily lowering the regulated price of the copper network would kneecap the competitive price umbrella for fiber broadband service thus destroying the economic return on investment case needed to fund the fiber upgrade?
FORBES: Why Europe Is Falling Behind U.S. On Broadband
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