如何使用 "category" 造句

1. Electronic paper is surely in the second category .
电子纸肯定就属于第二类。
2. High-speed rail was also in that category .
高铁也被划归于那个类别。
3. 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。
4. Or does each category have its own special circumstances ?
或者每一种类型都有特殊的处境?
5. 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。