名词短语中文翻译
中文翻译：用户线路交换
同义词：
['subscriber line', "subscriber trunk例句：1. The company's new customer service system is designed to improve the efficiency of subscriber trunk dialling.（该公司的新客户服务系统旨在提高用户线路交换的效率。）"]
例句：
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1. The company's new customer service system is designed to improve the efficiency of subscriber trunk dialling.
该公司的新客户服务系统旨在提高用户线路交换的效率。
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2.In this case, we need to ensure that the subscriber trunk dialling process is smooth and efficient.
在这种情况下，我们需要确保用户线路交换过程顺畅高效。
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3. The engineers are responsible for maintaining the quality of subscriber trunk dialling services.
工程师们负责维护用户线路交换服务的质量。