总的来说，每月费用区间为25-30美元，包括曾在30美元包月业务未停办时选择这一业务的早期客户。

Overall monthly bills in the $25-$30 range, including early customers who signed up for the $30/month unlimited plan before it was discontinued.

youdao

另外，区间还能通过离散的选择方法如选择聚合和最大区别缩放等来直接从消费者偏好做模型。

Alternatively, segments can be modelled directly from consumer preferences via discrete choice methodologies such as choice-based conjoint and maximum difference scaling.

youdao

然后再写一些大小为3的间隔。这可能涉及到一个选择的大小2比较区间。这也不是太难。

Then write some for an interval of size 3. It may involve a choice of which interval of size 2 to compare. This isn't too hard.

youdao

With this, if I can assume that accessing the i'th element of a list is constant, then you can't see that the rest of that analysis looks just like the log analysis I did before, and each step, no matter which branch I'm taking, I'm cutting the problem down in half.

读取数组中的第i个元素,是个常量时间的操作的话，我也就能像以前那样得到,这个算法是对数级复杂度的分析,并且每一步不管我选择哪个区间，我都可以把问题的规模缩小一半。

麻省理工公开课 - 计算机科学及编程导论课程节选