monetary exchange rate的用法和樣例：
例句
- Actual billed rates may vary due to currency exchange fluctuations.
實際費率會根據貨幣匯率波動而有所變更。 - You lock in today's exchange rate instead of a volatile currency exchange rate in the future that could significantly devalue your purchasing power.
你鎖定今天的匯率，避免了將來可能會極大地降低你的購買力的貨幣匯率波動。
