博士论文范围是3-5世纪拓跋鲜卑的考古学研究。的翻译：Doctoral thesis was Tuoba Xianbei of the 3-5 range of archaeological research. 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

Range of 3-5 doctoral thesis archaeological research TuoBaXianBei century.

Doctoral thesis was Tuoba Xianbei of the 3-5 range of archaeological research.

The doctoral dissertation scope is 3-5 century toba tartars Xianbei's archaeology research.

Doctoral thesis Maria Gomori range is 3 - 5 century the Xianbei (Archaeological studies.

Doctoral thesis was Tuoba Xianbei of the 3-5 range of archaeological research.