The National Police Agency receives tens of thousands of complaints every year, but there is not much that can be done to stop it, since attackers are often anonymous.

VOA: standard.2010.03.30

You can stop me any time and you should not feel somehow you are stopping the progress of the class.

你可以在任何时候打断我,而且你不必担心,你的问题就会打断课堂的进程

耶鲁公开课 - 基础物理课程节选

It says the element's not there. I can just stop.

好，这段代码就是这么做的对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选