名词
中文翻译：三线式电话线路
同义词：
['three-wire telephone line', 'three-wire telegraph line']
例句：
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1. The company's three-wiretrunk line is the backbone of itscommunication network.
公司的三线式总线路是其通信网络的骨干。
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2. The engineerswere able to fix the three-wiretrunk line in just a few hours.
工程师们能够在短短几小时内修复了三线式总线路。
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3. The three-wire trunkline was used to connect different parts ofthe city.
三线式总线路被用来连接城市的不同部分。