n.

1. 喜好，本性，倾向[C][（+for/to）]
   Peter has a special affinity for booze.

   彼得嗜酒。

2. 姻亲关系；密切关系[U][C][（+with/between）]
3. （语言、生物等之间的）类同；相像[C][（+to/with）]
   Italian has a close affinity to French.

   意大利语和法语很相似。

4. （尤指异性间的）吸引力[S]
   He felt a strong affinity to the Russian girl.

   他深受那个俄国姑娘吸引。

5. 【化】亲和性，亲和力
6. （尤指对异性）有吸引力的人

n.

1. a spontaneous or natural liking or sympathy.
   ▸a close relationship based on a common origin or structure.
   ▸relationship by marriage.
2. chiefly Biochemistry  the degree to which a substance tends to combine with another.