For me, the choice boils down to the choice between the body theory of personal identity and personality theory of personal identity.

在我看来，选择范围就缩小到了,人格同一性的肉体论,和人格同一性的人格论上。

耶鲁公开课 - 死亡课程节选

And this narrowing down is largely in place by about twelve months of age.

这种敏感范围的缩小,大约发生在婴儿十二个月大的时候

耶鲁公开课 - 心理学导论课程节选

I've calmly and slowly narrowed the search.

缩小了搜索的范围。

麻省理工公开课 - 计算机科学及编程导论课程节选

If I went on and told you what the different incident light was, and what the electrons were ejected with, and then you could look up the ionization energy for the particular different elements, you should be able to actually determine exactly which element it is, but just with the information given, we can only narrow it down to these choices here.

如果我继续告诉大家入射光源是什么，出射电子的动能是多少，那么你可以去查一查,以上各个元素的电离能，这样你就应该能确定,这个元素到底是哪个，但是只凭题目中的信息，我们只能把范围缩小至以上几种元素。

麻省理工公开课 - 化学原理课程节选

You narrow down until you're sensitive just to the language you hear.

你逐渐缩小敏感的范围,直到只对你所使用的语言敏感

耶鲁公开课 - 心理学导论课程节选

the abuse is, you know, it's not quite right, it depends upon whether it's all ready, but you can see in either case, after 12 steps, 2 runs through this and down to a problem size b over 2.

在12步以后，两轮过后，这个问题的范围b被缩小了一倍，这为什么很不错呢？,这意味着再来12步。

麻省理工公开课 - 计算机科学及编程导论课程节选