名词
中文翻译：主排放管
同义词：
['main conduit', 'main line', 'primary discharge tube']
例句：
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1. The mainconduit is used to carry wastewater from the plant.
主排放管用于输送工厂的废水。
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2. Main conduits are essential for maintaining proper water flow in a system.
主排放管对于保持系统内水流畅通至关重要。
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3. The main conduit was damaged during the storm, causing flooding in the area.
主排放管在风暴中受损，导致该地区发生洪水。