VOA慢速英语:阿富汗塔利班与基地组织的关系没有改变

vow –v. a serious promise to do something or behave in a certain way

affiliate – n. a person or group officially connected to a larger organization

discernible –adj. observable, recognizable

collaborate –v. to work together on some project

concentration –n. densely grouped together, having many members

to distance oneself –v. to show a lack of involvement with someone or something

diminish –v. to reduce or make smaller