美钞

例句：

1. 1. He bought a new carwith the money he earned from selling hisold car.
   他用卖旧车赚来的钱买了一辆新车。
2. 2. The rich man's wealth is in the form of goldand silver coins.
   富人的财富以金和银币的形式存在。
3. 3. Thecurrency exchange rate has fluctuated significantly since thebeginning of the year.
   自年初以来，货币汇率已经大幅波动。