名词
中文翻译：联合金属
同义词：
['union steel', 'union iron例句：1. The construction of the new bridge required a lot of union metal to support its weight.（建造这座新桥需要大量的联合金属来支撑其重量。）']
例句：
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1. The construction of the new bridge required a lot of union metal to support its weight.
建造这座新桥需要大量的联合金属来支撑其重量。
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2.The union metal was used in the construction of the bridge as it was strong and durable.
联合金属被用于桥梁的建设，因为它既坚固又耐用。
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3. The union metal was melted down and reused for other projects, reducing waste and saving resources.
联合金属被熔化并重新利用于其他项目，减少了浪费并节省了资源。