You have discribed the border as a safe where things the Taliban just go over there, when they are chased by the Afghan troops and Nato and then they come back then things are a little bit cooler.

您把这个边境线描写成一个关卡,当塔利班分子被阿富汗和北约军队追击时，他们就越过边界线,风声不紧时，他们又通过这个关卡回来。

普林斯顿公开课 - 国际座谈会课程节选