有/没有 + 血缘 + 关系
The noun 血缘 (xuèyuán) means "blood relation" or "blood ties," describing a biological or familial connection between people. It is often used in formal or legal contexts to discuss family relationships. For example, 没有血缘关系 means "not related by blood."
他们虽然没有血缘关系,但感情很深。
Tāmen suīrán méiyǒu xuèyuán guānxì, dàn gǎnqíng hěn shēn.
Although they have no blood relation, their bond is very deep.
血缘是割不断的纽带。
Xuèyuán shì gē bù duàn de niǔdài.
Blood ties are an unbreakable bond.
DNA检测可以确认两个人之间的血缘关系。
DNA jiǎncè kěyǐ quèrèn liǎng gè rén zhījiān de xuèyuán guānxì.
DNA testing can confirm the blood relationship between two people.