Corals are anthozoans, the largest class of organisms in the cnidaria group.

VOA: special.2010.08.10

But also, the students put in actually more time into the class and they outperformed the control group.

而且学生对课业,付出更多时间，成绩比对照组好。

哈佛公开课 - 幸福课课程节选

What do I have to do to this class-- this side of the class to put you in a different group from this side and different from that side?

我要对这个班做什么-,才能让坐在这一边的同学,和坐在那边的同学处于不同的群体？

耶鲁公开课 - 心理学导论课程节选