The rate of foreign exchange, once established, was supposedly fixed.

这个汇率一旦制定就被认为是固定不变的。

youdao

Under the influence of the global economic changing, the rate of foreign exchange waves violently.

受全球经济变化的影响，外汇汇率波动幅度很大。

youdao

But because rate and foreign-exchange swaps make up the bulk of the market, American banks will have to move only 10% or less of their $218 trillion (notional) combined derivatives holdings.

但是因为利率和汇率互换占美国市场的大部分，美国银行将只需要移除其218万亿合并衍生品的10%或更少。

youdao

Given the losses they have already suffered through the pound's fall, will they step up their purchases, especially as the growth rate of global foreign-exchange reserves is slowing?

ECONOMIST: Buttonwood

Holders of precious metals or other major tradable (fungible) assets worldwide need to monitor the foreign exchange rate of the currency in which their asset is held.

FORBES: Comex Gold Firmer on Follow-Through Strength from Friday's Strong Gains

Even America, with least to worry about in this respect (because of the size of its economy), has a policy of sorts on the dollar's value including attempting to push the rate around by means of foreign-exchange intervention.

ECONOMIST: Off target