亲缘的英文：
affinity

The zebra is related to the horse.
斑马和马有亲缘关系。

A fish,such as the walleye,that is related to the perch and resembles the pike.
梭鲈鱼一种与鲈有亲缘关系并貌似长矛的鱼，如大眼鲥鱼

Any of various fishes,such as the walleye,similar or related to the pickerel.
小梭鱼科类似狗鱼的鱼，或与狗鱼有亲缘关系的鱼，如突眼鲥

Any of several crustaceans,such as the spiny lobster,that are related to the lobsters.
龙虾与大螯虾有亲缘关系的任一种甲壳类动物，如龙虾

A cetacean(Grampus griseus)related to and resembling the dolphins but lacking a beaklike snout.
灰海豚，逆戟鲸一种与海豚有亲缘关系并形似海豚的鲸类动物(灰海豚灰海豚属)，但缺少喙状口鼻部。

The breeding of distantly related or unrelated individuals,often producing a hybrid of superior quality.
远交远亲缘或非亲缘交配，常产生较高质量的混种

I didn't have the nerve to ask a direct question about his kinship with those heads.
我没有勇气直接讯问他与那些头颅的亲缘关系。

The fusion of two gametes that are not closely related.
异系结合无密切亲缘关系的两种生物的结合

He is my double, though we are not related
我们两人虽然没有亲缘关系，他却和我长得一模一样。

The spice black pepper comes from an unrelated plant.
香料黑胡椒则来自于另一无亲缘关系的种类。

Relationship by nature or character; affinity.
亲密关系由性质或特征形成的关系；密切关系

That is not the basis for an enduring affinity.
这不是一种持久亲近关系的基础。

I have facile sense and affinity.
我有有温和感和亲和力。

She feels a strong affinity for him.
她对他很有吸引力。

escalation has conceptual affinities with bargaining theory
逐步升级同交易理论在概念上具有相似性。