正币

例句：

1. 1. The government is trying to regulate the exchange rate of its currency.
   政府正试图对其货币的汇率进行调控。
2. 2. The country's economy relies heavily on foreign exchange, which is a major source of income for thegovernment.
   该国经济严重依赖外汇，这是政府的主要收入来源。
3. 3. The local currency has been weakening against the US dollar due to high inflation rates.
   由于高通胀率，当地货币对美元一直在贬值。