名词
中文翻译：点火环
同义词：
['ignition ring', 'spark plug']
例句：
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1.The engine needs to be serviced regularly to maintain its performance.
发动机需要定期维护以保持其性能。
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2.The engineer carefully inspected the firing ring before starting the engine.
工程师在启动发动机前仔细检查了点火环。
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3. The old car's firing ring was worn out, so it needed to be replaced.
旧车的点火环磨损了，所以需要更换。