名词
中文翻译：铜
同义词：
['brass', 'brassy', 'coppery']
例句：
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1.The old house has been renovated with new copper windows.
这座老房子已经用新的铜窗进行了翻新。
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2. Copper is a good conductor of heat and electricity.
铜是一种良好的热和电导体。
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3.The copper coins were melted down to make new ones.
这些铜币被熔化用来制作新的。