名词
中文翻译：硬化弹簧
同义词：
['hardened spring', 'hardened steel spring']
例句：
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1.The new car has a hardening spring that provides excellent handling.
新车有一个硬化弹簧，提供出色的操控性能。
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2. The old bicycle had a hardening spring that made it easy to ride.
旧自行车有一个硬化弹簧，使得骑行变得容易。
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3. The spring in the door is hardening, and it will take some time to get it back to its original shape.
门上的弹簧正在硬化，需要一些时间才能恢复到原始形状。