形容词
中文翻译：铜的
同义词：
['coppery', 'copper-colored']
例句：
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1.The copper coins were minted in the 19th century.
这些铜币是在19世纪铸造的。
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2. The copper roof has been tarnished over time.
铜屋顶随着时间的推移已经变黑了。
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3. The copper pipe was rusted and needed to be replaced.
铜管生锈了，需要更换。