and the question that I've been asking They are The Tadzhiks in Afghnastan constitutes what about half of the entire population?

我一直在问的一个问题就是,塔吉克斯坦能占到多少，一半的整个阿富汗人口？

普林斯顿公开课 - 国际座谈会课程节选

The median age in Afghanistan is under 18.

阿富汗人口的年龄中值低于18岁。

普林斯顿公开课 - 人性课程节选