The distributional requirements are the only specific rules limiting the selection of courses outside a student's major program.

除学生的专业以外，学院对学生选课的惟一具体规定就是对课程分配方面的要求。

There'll be all kinds of unknowable distributional impacts on precipitation, patterns, et cetera.

降水、模式等都会产生各种不可知的分布影响。

Okay, now you understand that clinal variation is a gradual change in a feature across the distributional range of a species or population.

好的，现在你了解到，梯度变异是某个物种和族群中某个特性在不同分布范围中的逐渐变化。

On the one hand, it of course can be bad in the sense that it can perpetuate some of these distributional differences.

一方面，它当然可能是坏事，因为它可以使某些分配差异永久化。