缩小范围：使更具体、更明确。
narrow down // [ narrowing narrowed narrower narrows narrowest ]
动词词组 If you narrow down a range of things, you reduce the number of things included in it. 缩减
What's happened is that the new results narrow down the possibilities.
现有的情况是，新的结果缩小了可能性的范围。
become more special
同义词： specialize / specialise / narrow
难怪Hitch说Sue是非常Practical（务实的），如果我研究思路太宽，无法Narrow down（缩小范围）的话，找Sue最好，她会很快给你指明方向。
... much less更不用说;更少;不及 narrow down缩小或限制范围(使更确切) not to mention更别提...,更不必说...
减少(narrow down), 此释义来源于网络辞典。
... narrow band[计]窄带，窄频带；... narrow down缩小；限制；减少；变... narrow gap窄隙；狭窄通路...
For group decision-making to work well, you need a way to sort through the various options they propose: and you need a mechanism to narrow down these options.
要想让团队决策发挥作用，你需要有一种方法来梳理他们提出的各种方案，你还需要一种机制来缩小这些选择的范围。
What's happened is that the new results narrow down the possibilities.
现有的情况是，新的结果缩小了可能性的范围。
If you can narrow down this list, you should.
如果可以缩减列表，应该尽量缩减。
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
心理学导论课程节选 : 耶鲁公开课
He also had the idea that he would make it narrow enough so that when you're boarding an airplane you can still roll it down the aisle of the airplane-- it just fit perfectly.
他还想到要将把手弄的窄一点,以便登机进通道的时候,还能拖着箱子走-,这非常符合当时的需要。
金融市场课程节选 : 耶鲁公开课
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。
化学原理课程节选 : 麻省理工公开课
They can then narrow down the group of potential donors contacted for more detailed analysis.
So why not narrow down the search a bit via a superspecific online dating site?
The Hirisplex system could allow investigators to narrow down a large group of possible suspects.