名词
中文翻译：电话交换局
同义词：
['PBX', 'PBX system', 'switchboard']
例句：
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1. The PABX is responsible for managing the communication between different departments in the company.
电话交换局负责管理公司不同部门之间的通信。
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2. The new PABX system has greatly improved the efficiency of our office operations.
新的电话交换系统大大提高了我们办公室的工作效率。
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3. The PABX was designed to provide a secure and reliable communication network for the entire organization.
电话交换局被设计为为整个组织提供安全和可靠的通信网络。