名词
中文翻译：铜
同义词：
['copper', 'brass', 'bronze例句：1. This piece of copper is very shiny and smooth.（这块铜很光滑且闪亮。）']
例句：
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1. This piece of copper is very shiny and smooth.
这块铜很光滑且闪亮。
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2. Copper is a good conductor of electricity.
铜是良好的电导体。
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3.The ancient Egyptians used copper to make tools and weapons.
古埃及人用铜制作工具和武器。