我读这本书是为了了解拉美国家的翻译：I have read this book to understand Latin American countries 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

I read this book in order to understand the Latin American countries

I have read this book to understand Latin American countries

I read this book am in order to understand the Latin American nations

I read this book to learn about Latin American countries

I have read this book to understand Latin American countries