名词
中文翻译：兑换率
同义词：
['exchange rate', 'currency exchange rate', 'foreign exchange rate']
例句：
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1.The par rate of exchange between the twocountries is a key factor in their economiccooperation.
两国之间的兑换率是他们经济合作的关键因素。
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2. The exchange rate has been fluctuating significantly since the introduction ofnew policies.
自从实施新政策以来，汇率一直在剧烈波动。
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3. The foreign exchange market ishighly volatile, and investors need tobe aware of the par rate of exchangefluctuations.
外汇市场非常不稳定，投资者需要意识到汇率波动的风险。