What the clicker is is a little device that will allow you to enter responses to questions that will then get entered into my computer and we can show immediate poll results from the class.

表决器是一种小型设备,你可以通过它回答问题,这些答案会传进我的电脑,我们就可以迅速地得到投票结果

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选