基因测试证实了她与这个古老部落的血缘关系。

The DNA test proved her ___lineage to the ancient tribe.

收养的法律程序完成后，法院正式确认了他们的亲子关系。

After completing the legal adoption process, the court officially recognized their ___filiation.

科学家们正在研究这些语言变体与其祖先语言之间的关系。

Scientists are studying the ___relationship between these language variants and their ancestral language.