and ongoing maintenance services
以及持续的维护服务
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Verizon has been replacing high-maintenance portions of its residential copper network with fiber optics to provide enhanced services and to reduce ongoing repair costs.
ENGADGET: Verizon adds 'record-high' 2.1 million subscribers in Q4 2012, but still makes a loss
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