更深层的了解美国的发展历史的翻译：Deeper understanding of United States history 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

Deeper understanding of the history of the United States

Deeper understanding of United States history

The in-depth understands US's development history

A deeper understanding of history and development of the U.S.

Deeper understanding of United States history