名词
中文翻译：松紧配合的活塞
同义词：
['loose-fitting piston', 'loose-fitting cylinder例句：1. The new engine has a loose fitting piston that needs to be replaced.（新引擎有一个松紧配合的活塞需要更换。）']
例句：
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1. The new engine has a loose fitting piston that needs to be replaced.
新引擎有一个松紧配合的活塞需要更换。
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2. The car's engine is designed with a loose fitting piston for better fuel efficiency.
汽车的引擎设计有松紧配合的活塞，以获得更好的燃油效率。
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3. The mechanic replaced the old loose fitting piston with a new one.
机械师用一个新的松紧配合的活塞替换了旧的。