他 20 岁的时候，他建立了自己的公司的翻译：When he was 20 years old, he set up his own company 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 was 20 years old, he established his own company

When he was 20 years old, he set up his own company

He 20 year-old time, he has established own company

He was 20 years old, he has established his own company

When he was 20 years old, he set up his own company