银行开始拒绝履行不把美元兑换成黄金的协议。

Banks began welshing on their agreement not to convert dollar reserves into gold.

我想把一些美元兑换成英镑。

I want to convert some dollars into pounds.

美元以什么汇率兑换成英镑？

At what rate does the dollar convert into pounds.

兑换或把…换成现款：

Cashed, cash. ing, cash. es To exchange for or convert into ready money:

我想把全部的汇款都兑换成美元。

I want to convert the full amount of the remittance into US dollars.