名词中文翻译1
中文翻译：Unknown
同义词：
['public telecommunications network', 'public telephone network', 'public switched telephone system']
例句：
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1. The city's public switched telephone network is one of the most reliable in the country.
该市的公共交换电话网络是国内最可靠的之一。
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2. The new public switched telephone network will provide better connectivity for remote areas.
新的公共交换电话网络将为偏远地区提供更好的连接性。
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3. The government has invested heavily in upgrading the public switched telephone network to improve service quality.
政府已大力投资于升级公共交换电话网络，以提高服务质量。