1. Ethnohistoric research aims to study the historical interactions and cultural changes of different ethnic groups.
民族历史研究致力于研究不同民族之间的历史互动和文化变迁。

2. The ethnohistoric records provide valuable insights into the traditions and customs of indigenous peoples.
民族历史记录提供了对土著民族传统和风俗的宝贵见解。