名词
中文翻译：冻铁
同义词：
['frozen steel', 'ice-hardened iron']
例句：
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1. Thefrozen iron was used to make the bridge.
用来制造桥梁的冻铁。
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2. The ironwas so cold that it could not bemelted even with a blowtorch.
这铁太冷了，连喷灯都融化不了。
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3. The frozen iron was used asan ornamental feature in the city's architecture.
作为城市建筑的一个装饰特征，这种冻铁被使用。