But the military ended hostilities with peace agreements that critics say repeatedly allowed the Taliban to move back in and take control.

VOA: standard.2009.03.26

I ended with this picture that shows you a little bit about control of gene expression.

我用这幅图结束了上一节课,图上讲了一些关于基因表达调控的内容

耶鲁公开课 - 生物医学工程探索课程节选