改革开放的英语翻译是 Reform and Opening Up。

音标：

改革开放：[ɡǎi gé kāi fàng]（拼音）

意思：

"改革开放"指的是中国自1978年以来，实施的经济、社会、政治改革政策，特别是在经济领域中，推动了市场经济、外资引入、民营企业发展和国际交流。

翻译：

Reform and Opening Up refers to a series of economic and political reforms initiated in China starting in 1978, aimed at modernizing the country by incorporating market-oriented policies and opening the door to foreign trade and investment.

用法：

The Reform and Opening Up policy was a milestone in China's economic development.

In the early stages of Reform and Opening Up, many industries were privatized.

Reform and Opening Up has greatly transformed the Chinese economy into one of the world's largest.

The success of Reform and Opening Up can be seen in the rapid urbanization of China.

Since the Reform and Opening Up, foreign investment has significantly increased in China.

Reform and Opening Up led to the rise of the Chinese middle class.

The Reform and Opening Up policy allowed China to join the World Trade Organization in 2001.

Reform and Opening Up helped improve China's global standing and influence.

Under Reform and Opening Up, China's private sector flourished.

The impact of Reform and Opening Up on China's development is undeniable and far-reaching.

短语搭配：

经济改革 (economic reform)

政治改革 (political reform)

开放市场 (open the market)

外资引进 (foreign investment introduction)

国际化进程 (internationalization process)