名词
中文翻译：Unknown
同义词：
['closed passage', 'closed channel', 'closed conduit']
例句：
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1. The closedchute is used to transport materials without being seen by humans.
这个关闭的沟道用于在不被人类看见的情况下运输材料。
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2.The engineer had to close the chute before starting the project.
工程师在开始项目之前必须关闭这个沟道。
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3.The closed chute was a crucial part of the construction process.
这个关闭的沟道是施工过程中至关重要的一部分。