汇率

例句：

1. 1. The exchange rate betweenthe two currencies fluctuates constantly.
   两种货币之间的汇率不断波动。
2. 2. The company's decision to raise its exchange ratehas caused a stir in the market.
   公司决定提高汇率，引起了市场的轰动。
3. 3. Theexchange rate is determined by the supply anddemand for the currency.
   汇率由货币的供求关系决定。