Currency is money issued by governments and central banks throughout the world. An exchange rate is the rate at which one currency can be exchanged for another. The value of one currency compared to another for the purpose of exchange is determined by either a “fixed” or a “floating” rate. A fixed rate is one that is set and maintained by a government or central bank. A floating rate is determined in the foreign exchange, or Forex, market by supply and demand. Travelers must buy the currency of the country which they are visiting in order to make purchases in local markets. Although today, both fixed and floating rate currencies are used, most exchange is governed by rates set through a “managed float.”
　　貨幣是各國政府和中央銀行發行的錢幣。匯率是一種貨幣轉換為另一種的比率。一種貨幣對另一貨幣的轉換價值取決于固定匯率或浮動匯率。固定匯率是固定的并由政府或中央銀行維持。浮動匯率取決于外匯及市場的供給和需求。旅行者必須購買旅游當地的貨幣從而進行消費。雖然現如今同時使用固定和浮動利率，但大多數利率采用固定利率并帶有一定的浮動。