那么，是文化、遗传或者其他环境因素造成了这种选择，还是客观上就存在最佳的结婚年龄差异？

But is it culture, genetics or the environment that drives such a choice-and is there an optimal age difference?

youdao

库森说这种文化意味着不存在招聘的问题。

Cookson says this sort of culture means there are no recruitment issues.

youdao

曼早先的研究表明海豚妈妈通常会把这种方法传给女儿以及个别儿子。 这是除了人类以为，动物界中唯一存在的一种文化传承。

Mann's previous research has shown that dolphin mothers pass the sponging method to their daughters and some of their sons, rare evidence of a cultural tradition in an animal other than humans.

youdao

And the terms of the expression change, the parties to the conflict change, the sights change, but the controversy goes on.

也许人们对这种冲突的表述有所改变，利益双方有所改变，文化景观有所改变，但这种争议永远存在。

普林斯顿公开课 - 人性课程节选

There was a lot of validity to that contemporary cultural fear.

这种同时代的人在文化上对他的恐惧心理确实存在。

耶鲁公开课 - 弥尔顿课程节选