They are related to each other.

Indirect fitness-The number of relatives produced multiplied by the degree of relatedness to those individuals.

间接健身 - 亲属的人数乘以生产的程度相关的个人.

Degree of relatedness-The probability of two individuals sharing identical genes by descent.

一定程度的关联性 - 的概率两个人共享相同的基因血统.

a close/near/distant relation of mine

我的一位近亲 / 远亲

He's called Brady too, but we're no relation (= not related) .

他也叫布雷迪，但我们不是亲戚。

We seek to improve relations between our two countries.

我们寻求改进我们两国间的关系。

a party for friends and relations

亲戚朋友的聚会

Is he any relation to you?

他是你的什么亲戚吗？

the relation between rainfall and crop yields

降雨量和农作物产量之间的关系

...women's position in relation to men in the context of the family...

在家庭范围内女人相对于男人的位置

Relations with neighbouring countries are under strain at present.

目前，与邻国的关系正处于紧张状态。

...a relation between youthful unemployment and drug-related offences...

年轻人失业与毒品相关犯罪之间的关联

(formal)to have sexual relations (= to have sex)

发生性关系

a relation by marriage

姻亲

Greece has established full diplomatic relations with Israel...

希腊已经和以色列建立了全面的外交关系。

And the article refers also the relation of Burckhart's thinking with Schopenhauer's philosophy.

而这个部分也提及布氏此种历史思想,与叔本华意志哲学之间的关系.

diplomatic/international/foreign relations

外交 / 国际 / 对外关系

US-Chinese relations

美中关系

Its brain is small in relation to (= compared with) its body.

和它的身体相比，它的大脑很小。

...visits to friends and relations...

拜访亲友

(formal)I have some comments to make in relation to (= concerning) this matter.

关于这件事我有几点看法。