名词
中文翻译：电话交换机
同义词：
['switchboard', 'telephone exchange']
例句：
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1.The switchman's telephone is a critical tool for communication in an office.
电话交换机是办公室沟通的关键工具。
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2. The switchman's telephone was the only way to reach the manager during the power outage.
在停电期间，电话交换机是唯一联系到经理的方式。
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3. The switchman's telephone system is responsible for connecting all lines of communication within the company.
电话交换机系统负责连接公司内部的所有通信线路。