名词
中文翻译：快乐阀门装置
同义词：
['joy valve', 'joy valve gear', 'joy valve gears']
例句：
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1.The joy valve is responsible for controlling the flow of air through the engine.
快乐阀门负责控制发动机中空气的流动。
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2.The joy valve was replaced after it failed to work properly.
快乐阀门在工作不正常后被更换了。
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3.The joy valve gears are designed to ensure smooth operation of the engine.
快乐阀门齿轮设计用来确保发动机的平滑运行。