名词
中文翻译：次要管道
同义词：
['subordinate pipe', 'secondary conduit']
例句：
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1. The secondary pipe is used tocarry wastewater from the main line.
次级管道用于将废水从主管道中输送出来。
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2. The construction crew had toinstall a secondary pipe to bypass theblockage.
施工队不得不安装一个次级管道来绕过堵塞。
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3. Thesecondary pipe was designed toprevent water from overflowingduring heavy rains.
次级管道被设计用来防止在大雨期间水溢出。