在大学四年级的时候，我是他毕业设计的导师。的翻译：In four-grade when 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

Fourth year in college when I was his graduation project mentor.

In four-grade when I was his graduation project mentor.

In university 4th class time, I am his graduation project teacher.

At the University of grade 4 when he graduated from design, I was a mentor.

In four-grade when I was his graduation project mentor.