名词
中文翻译：活塞
同义词：
['opener', 'piston', "cylinder例句：1. The engine's open piston is causing the noise.（发动机的开放活塞正在产生噪音。）2. The engineer replaced the old open piston with a new one.（工程师用一个新的开放活塞替换了旧的。）"]
例句：
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1. The engine's open piston is causing the noise.
发动机的开放活塞正在产生噪音。
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2. The engineer replaced the old open piston with a new one.
工程师用一个新的开放活塞替换了旧的。
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3.The car's engine has an open piston that needs to be checked regularly.
这辆车的引擎有一个需要定期检查的开放活塞。