tunnel vision

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Balance has often had a real tunnel-vision problem of just using the same spell over and over.
平衡天赋经常会有这样的问题，就是平衡德们只会用一种法术。
However, with this wealth of programming capability comes a danger -- a sort of API tunnel vision.
但是丰富的编程能力也带来一种危险 —— 某种 API 偏执症。
When pressure kicks in, so does a great deal of focus and a degree of tunnel-vision that prevents us from getting distracted by unimportant things.
当压力来临时，我们就把所有的注意力高度地集中，而不会被琐事分心。

I was just finding very tunnel vision-like, the smallest elements at that moment in time which means I don't know anything about the other elements other than they are not the smallest and so no matter what with Selection Sort I had to repeat this again and again and again and if you do out the math it's roughly N squared steps in the worst case as well.
我只有一个狭窄的视野，只知道某时刻的最小元素,就意味着我并不知道其他元素的任何情况,只知道它们不是最小的,所以不管怎样，在选择排序中,我就得一遍一遍地重复选择过程,在最坏情况下,大概需要N的平方次比较。
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Control, all-or-nothing thinking, and tunnel vision are the byproducts of your fear.
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As I broke through the 180-mph barrier, a kind of tunnel vision took over.
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Nearly three quarters of the tablet market may have tunnel vision when it comes to a platform of choice -- that being Apple's iPad -- but for the Android faithful, there are options readily available -- a wide and confusing glut, at that.
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(SEEING) a medical condition that makes someone see only things that are directly in front of them
(THINKING) the fact that someone considers only one part of a problem or situation, or holds a single opinion rather than having a more general understanding

If you suffer from tunnel vision, you are unable to see things that are not straight in front of you.
If you say that someone has tunnel vision, you disapprove of them because they are concentrating completely on achieving a particular aim, and do not notice or consider anything else.