名词
中文翻译：中央电话交换局
同义词：
['中央通信局，电信交换所例句：1. The central telephone exchange is responsible for the communication between different regions.（中央电话交换局负责不同地区之间的通信。）']
例句：
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1. The central telephone exchange is responsible for the communication between different regions.
中央电话交换局负责不同地区之间的通信。
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2.The central telephone exchange provides a reliable service for all residents.
中央电话交换局为所有居民提供可靠的服务。
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3. The central telephone exchange has been upgraded to improve its efficiency and reliability.
中央电话交换局已经升级，以提高其效率和可靠性。