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1. The ancient Egyptians used brass coins to pay taxes.
古埃及人使用黄铜币来缴税。
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2. This antique coin is worth a fortune, and it's been passed down through generations.
这枚古董硬币非常珍贵，已经传了好几代了。
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3. The museum has an exhibit on the history of brass coins, so I decided to visit it today.
博物馆有一个关于黄铜币历史的展览，所以我今天决定去参观一下。