exchange rate

exchange rate音标为：ɪkˈsembə k r eɪt；基本翻译为“汇率”或“汇兑率”；速记技巧为：记为“交换（ex）来（change）的率（rate）”。

Exchange rate这个词的英文词源可以追溯到拉丁语exchangerium，意为交换或交易。其变化形式包括exchange rate（汇率）、exchanger（兑换商）等。

相关单词：

foreign exchange（外汇）：指不同国家货币之间的交换，这个词源于英语，意为“外国交换”。

convertibility（可兑换性）：指一种货币可以转换为另一种货币的程度，这个词源于拉丁语convertere，意为“转换”。

convertibility rate（兑换率）：指一种货币转换为另一种货币的比例，这个词源于convertibility，表示货币兑换的比例。

exchange rate fluctuation（汇率波动）：指汇率在一段时间内的不稳定变化，这个词源于exchange rate和fluctuation，表示汇率的变化。

exchange rate risk（汇率风险）：指由于汇率变动而导致的经济风险，这个词源于exchange rate和risk，表示由于汇率变动而产生的风险。

以上这些单词都与exchange rate密切相关，反映了外汇交易和货币兑换的历史和现状。

常用短语：

1. exchange rate adjustment

2. exchange rate fluctuation

3. exchange rate differential

4. exchange rate risk

5. exchange rate peg

6. exchange rate revaluation

7. exchange rate policy

例句：

1. The exchange rate between the two currencies has been adjusted upwards.

2. The exchange rate fluctuation in the market is caused by various factors.

3. The exchange rate risk of a company should be properly managed.

4. The government should take measures to reduce the exchange rate differential between the domestic and foreign currencies.

5. The exchange rate of the US dollar should be pegged to the value of goods and services.

6. The revaluation of the exchange rate has brought about a surge in exports.

7. The government should formulate an effective exchange rate policy to maintain economic stability.

英文小作文：

The exchange rate is an important factor that affects the international trade and investment activities. It is necessary to understand the relationship between the exchange rate and economic growth, as well as the impact of exchange rate policies on economic stability and development. In recent years, with the rapid development of globalization, the exchange rate has become a hot topic in international economics research. Many countries have taken various measures to adjust their exchange rates to achieve their economic goals, such as strengthening domestic currency reserves, strengthening monetary policy, and strengthening foreign exchange management. In addition, many countries also need to take measures to reduce the impact of exchange rate fluctuations on their economic growth and employment, such as strengthening export promotion, strengthening domestic demand management, and strengthening social security system. In conclusion, the exchange rate is an important issue that needs to be carefully considered by governments and enterprises in international economic activities.