而在大学四年级的时候我是他毕业设计的导师。的翻译：And in four grade 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

The fourth grade in college when I was his graduation project mentor.

And in four grade I was his graduation project mentor.

But in university 4th class time I am his graduation project teacher.

While in university I was 4 when he graduated from the School of Design instructors.

And in four grade I was his graduation project mentor.