自从改革开放以来，中国发生了巨大的变化的翻译：正在翻译，请等待... 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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Since reform and opening up, China has undergone enormous changes

Since the reform and open policy, China has had the huge change

Since the beginning of reform and opening up, tremendous changes have taken place in China

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