名词
中文翻译：Unknown
同义词：
['exchange rate', 'currency conversion', 'foreign exchange', 'monetary exchange']
例句：
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1. The government has introduced a new policy to regulate the currency exchange.
政府已经引入了一项新的政策来监管货币兑换。
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2. The foreign exchange market fluctuates daily due to global economic conditions.
由于全球经济状况，外汇市场每天波动。
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3. The company's currency conversion service is widely used by travelers around the world.
该公司的货币转换服务被世界各地的旅行者广泛使用。