在今天的.交易中，美元对日元的汇率保持稳定。
In trading today the dollar held steady against the yen.
日元对美元的比价已跌至空前的低点。
The yen has fallen to an all-time low against the dollar.
可以付你英镑，也可以付你美元。
You can be paid in pounds sterling or American dollars.
你可在旅馆把你的钱兑换成美元。
You can exchange your currency for dollars in the hotel.
与美元的兑换率是多少？
What's the rate of exchange against the dollar?