So let's have a clicker question here on how many total pi bonds do you expect to see in benzene?

让我们来做个课堂习题,你们觉得苯环里有一共多少个π键？

麻省理工公开课 - 化学原理课程节选

But I expect that like many of our students here that's just one of multiple affinity groups you might have chosen to become part of.

但，我说的没错的话，跟许多别的学生一样,那只是你能够选择的,许多兴趣小组之一。

普林斯顿公开课 - 人性课程节选

How many people here are either psych majors or expect to become psych majors or cognitive science as though you could raise your hand to?

有多少学生是主修心理学的,或者准备选心理学作为主修的？,或者准备选认知学作为主修的？,有的话请举起手？

耶鲁公开课 - 心理学导论课程节选