OK, not a quiz for points or anything, don't freak out, but I do want you to tell me who these people are. So, what about this person?

我们的课程将由一个小测试开始，别紧张，这不记录分数的,但我希望你们能告诉我这些人是谁？

麻省理工公开课 - 化学原理课程节选

As we do these little clicker poll things you can tell me if you find it helpful or not, then we can decide how to continue --whether to continue them in the future.

我们用表决器做这个小测试的同时,大家可以告诉我你们觉得这有没有帮助,然后我们再决定以后是否继续用

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选