英语语法分析

Native American confederacy located on the northern Great Plains, composed of the Blackfoot, Blood, and Piegan tribes. Traditional Blackfoot life was based on nomadic buffalo hunting.

一美土著人同盟，位于北部大平原，由黑脚族、布拉族、皮埃甘部落组成。传统黑脚人以游牧猎牛为生。