大学四年级，我是他毕业设计的导师的翻译：Four year at University, I was his graduation project mentor 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

University of fourth grade, I was his graduation project mentor

Four year at University, I was his graduation project mentor

The university 4th class, I am his graduation project teacher

4 university he graduated from design, I was a grade is the instructor

Four year at University, I was his graduation project mentor