名词
中文翻译：电话交换台
同义词：
['telecommunication exchange', 'telecommunications exchange']
例句：
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1. The company's new phone exchange system will improve customer service.
公司的新电话交换系统将提高客户服务。
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2. The exchange has been upgraded to support higher data rates.
该交换已升级以支持更高的数据传输速率。
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3. The exchange is responsible for the distribution of telephone numbers across the country.
该交换负责在全国范围内分配电话号码。