consanguinity
n.血亲，同族，密切关系；同源
网络解释.血缘；血亲；同源；近亲
relation connection blood
双语例句
1. 1 . Aside from a thorough medical family history, there is no need to offer any genetic testing on the basis of consanguinity alone.
除了需要一份详尽的家庭病史之外, 没有必要仅根据有血缘关系这一条理由就进行任何的基因测试.
来自《简明英汉词典》