foreign currency的音標是[?f??r?n ?kr??li]，基本翻譯是“外幣”，速記技巧是：for+里+錢。

Foreign currency的英文詞源是拉丁語“extra” (意為“外部的”)和“valere” (意為“有價值”)。這個詞通常指的是非本國貨幣，通常用于國際貿易和投資。

變化形式：復數形式為“foreign currencies”，過去式為“foreigned”或“foreigned”，現在分詞為“foreigning”。

相關單詞：

Dollar: 美元，其英文詞源可以追溯到拉丁語“denarius”，意為“一塊銀元”。

Euro: 歐元，其英文詞源來自于拉丁語“euro”，意為“歐洲”。

Pound: 英鎊，其英文詞源來自于拉丁語“libra”，意為“一磅”。

Yen: 日元，其英文詞源來自于日語“Yen”，意為“銀幣”。

Rubles: 盧布，其英文詞源來自于俄語“ruble”，意為“一塊銀元”。

Franc: 法郎，其英文詞源來自于法語“franc”，意為“自由”。

Mark: 馬克，其英文詞源來自于德語“mark”，意為“邊界”。

Krone: 克朗，其英文詞源來自于瑞典語“krone”，意為“硬幣”。

Peso: 比索，其英文詞源來自于西班牙語“peso”，意為“重量”。

常用短語：

1. foreign currency exchange 貨幣兌換

2. foreign currency loan 外幣貸款

3. foreign currency account 外幣賬戶

4. convert foreign currency 兌換外幣

5. carry forward foreign currency 結轉外幣

6. foreign currency deposit 外幣存款

7. foreign currency investment 外匯投資

例句：

1. I need to convert my US dollars into euros at the airport foreign currency exchange. (在機場貨幣兌換處將美元兌換成歐元)

2. I have a foreign currency loan that I need to pay back in my home country"s currency. (我有外幣貸款需要用本國貨幣償還)

3. I have a foreign currency account at the bank and I can easily transfer funds between currencies. (我在銀行有一個外幣賬戶，可以輕松地在不同貨幣之間轉移資金)

4. I always carry forward my foreign currency savings in a separate account to avoid any confusion when converting currencies. (我總是將外幣儲蓄存入一個單獨的賬戶，以避免在兌換貨幣時出現混淆)

5. I invest in foreign currencies to diversify my portfolio and reduce risk. (我投資外幣是為了分散投資組合并降低風險)

6. We need to convert our foreign currency payment into local currency to avoid any exchange rate fluctuations. (我們需要將外幣付款轉換為當地貨幣，以避免匯率波動的影響)

7. The company has been investing in foreign currency bonds and stocks to increase its cash flow and diversify its sources of income. (公司一直在投資外幣債券和股票，以增加現金流并分散收入來源。)

英文小作文：

When it comes to investing, diversification is key. By investing in different currencies, we can reduce risk and increase returns. Currency exchange is a common occurrence when traveling abroad, and it"s important to understand how to handle it effectively. Whether you"re traveling for business or pleasure, it"s always wise to have some knowledge of the local currency and how it compares to your home currency. By investing in foreign currencies, you can take advantage of the different exchange rates and potentially increase your returns while reducing risk. However, remember to always do your research and consult a professional before making any investment decisions.