名词
中文翻译：主气囊导管
同义词：
['main duct', 'main conduit', 'main passage', 'main tube']
例句：
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1. The main duct of the pipeline is prone to blockages due to debris.
由于杂物，管道的主通道容易堵塞。
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2.Main conduits are designed to carry large quantities of fluids.
主导管被设计用来输送大量的流体。
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3. The main tube was damaged during the flood, causing a significant loss of water.
在洪水中，主要管道受损，导致大量水的损失。