名词
中文翻译：Unknown
同义词：
['closed valve', 'closed nozzle']
例句：
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1. The closed nozzle prevents the air from leaking out.
这个关闭的喷嘴防止了空气泄漏。
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2. The engineer used a closed nozzle to spray paint on the wall.
工程师使用一个关闭的喷嘴在墙上喷涂油漆。
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3. The closed nozzle was designed to be easy to clean and maintain.
这个关闭的喷嘴设计得易于清洁和维护。