名词
中文翻译：Unknown
同义词：
['internal passage', 'internal corridor', 'internal tunnel']
例句：
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1. The engineer designed a new inside passage to improve the efficiency of the factory.
工程师设计了一条新的内部通道，以提高工厂的效率。
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2. The scientist conducted an experiment inside a large tube to test the theory.
科学家在一个大型管状容器内进行实验，以测试该理论。
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3.The construction workers were working inside the building's interior passages.
建筑工人正在建筑物的内部通道中工作。