Why haven't we been able to narrow it down?

那我们为什么无法将不确定性的落差范围缩小呢？

Furthermore can you narrow it down to a class?

此外，你可以缩小到一个班吗？

It's gonna narrow it down to the family bloodline

现在范围缩小到某一家族的血统。

To narrow it down , I'm gonna need more information.

为缩小范围，我需要更多信息。

I cannot understand your main idea, can you narrow it down, please?

我不能理解你的主要想法，请你缩小范围好吗？

If you ask him to name a favorite career experience he struggles to narrow it down.

若问他最难忘的工作经历，他很难用几句话就说得清楚。

With so many choices, it's no wonder most universities give students two years to choose a major. Here are some ways to narrow it down.

面临如此多的选择，毫不奇怪许多大学给学生两年的时间来选择专业。以下是缩小选择范围的一些方法。

“Once they narrow it down to one or two, I'll start paying attention, ” he added, according to clips of the interview released by NBC.

根据NBC发布的采访视频片段来看，奥巴马后来又补充了一句话：“一旦共和党竞选缩小范围锁定了一两位候选人，我会开始关注。”

If everyone in the office hates you and you can’t figure out why (maybe you can’t narrow it down to the phone) then that is still a concise problem.

假如办公室里的每个人都讨厌你而你不知道为什么（或者你不能简明的回答电话）那么这仍然是个简明的问题。