official par of exchange的用法和樣例：
例句
- Official rate set by monetary authorities for one or more currencies.
貨幣管理當局對一種或多種貨幣設置的官方匯率。 - Do you have a currency conversion service for changing FEC into foreign currency at the official rate?
你們有按官方匯率把人民幣兌換成外幣的服務嗎？ - The refund will be according to the exchange rate of the refunding day.
返還費用以返還日當日外匯牌價匯率兌換。
