yán / jiū / zhě / rèn / wéi / xuè / tǒng / lùn / céng / bèi / yòng / lái / bǎ / rén / huà / fēn / wéi / bù / tóng / de / zhèng / zhì / jiē / jí

研究者认为，血统论曾被用来把人划分为不同的政治阶级。

Researchers believe that the theory of bloodline-based class division was once used to divide people into different political classes.