This could also be done through a wired system, but wireless technology offers lower installation costs and greater flexibility.
有线系统当然也可以做到这一点，但无线技术所需的安装费用更低，也更加灵活。
This could also be done through a wired system, but wireless technology offers lower installation costs and greater flexibility.
有线系统当然也可以做到这一点，但无线技术所需的安装费用更低，也更加灵活。
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