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1. The banknotes are worth 500 euros each.
这张纸币价值500欧元。
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2. I need to exchange my dollars for euros before I can travel.
在旅行之前,我需要将我的美元兑换成欧元。
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3. The currency exchange rate fluctuates daily, affecting the value of goods and services.
货币汇率每日波动,影响商品和服务的价值。