名词
中文翻译：活塞环壁
同义词：
['piston ring', 'cylinder wall例句：1. The piston ring is designed to prevent the engine from overheating.（活塞环的设计是为了防止发动机过热。）']
例句：
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1. The piston ring is designed to prevent the engine from overheating.
活塞环的设计是为了防止发动机过热。
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2.The cylinder wall is made of a special material that can withstand high pressure.
气缸壁是由一种特殊材料制成的，能够承受高压。
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3. The piston ring was worn out due to excessive use and needs to be replaced.
由于过度使用，活塞环已经磨损，需要更换。