动词
中文翻译：使金属化
同义词：
['harden', 'harden up', 'fortify']
例句：
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1. The metal was so cold that it felt like ice.
金属非常冷，感觉像冰。
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2. The old castle had been metalized over the years.
这座老城堡多年来已经被金属化了。
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3. The workers were metalizing the steel beams with a torch.
工人们用火把将钢梁金属化。