他认为他可以从纪录片中了解中国历史的翻译：He thought he could from the documentary about the history of China 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

He believes that he can learn about Chinese history from the documentary

He thought he could from the documentary about the history of China

He thought he may understand the Chinese history from the documentary film

He believes that he can understand Chinese history from the documentary

He thought he could from the documentary about the history of China