He says the class action failed because it did not target a single action or policy by Wal-Mart.

VOA: special.2011.06.24

But you, everybody in the master public policy class has a cohort,

但是你，每一个公共政策硕士课的人都属于其中一级，

跟校友们的关系 - SpeakingMax英语口语达人

I mean I'm not going to try to trick you or throw in things just to make sure you come to class, but it's usually a pretty good policy.

我不是和你们耍手段,也不是为让你们来上课而随便说说,但这通常是个好方法

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选