exchange rate
US /ɪksˈtʃeɪndʒ reɪt/
UK /ɪksˈtʃeɪndʒ reɪt/

1.
匯率, 兌換率
the value of one currency for the purpose of conversion to another
:
•
The exchange rate between the dollar and the euro fluctuates daily.
美元和歐元之間的匯率每天都在波動。
•
Always check the current exchange rate before converting money.
在兌換貨幣之前,務必查看當前的匯率。