复数： categories

Electronic paper is surely in the second category .

电子纸肯定就属于第二类。

High-speed rail was also in that category .

高铁也被划归于那个类别。

A second candidate for the extractive-elite category is the public sector .

在攫取型精英范畴中，第二个候选人是公共部门。

Or does each category have its own special circumstances ?

或者每一种类型都有特殊的处境？

Recent proposals from the us treasury fall partly into this category .

美国财政部最近的提案在一定程度上就属此类。