Each exercise period should be at least ten minutes long.

VOA: special.2010.06.08

it was a small seminar-- I had groups of students proposing two novels actually for the end of the syllabus, and the exercise gets you to think very hard about what you think this period is all about.

是以小组研讨课的方式进行-,几组学生提出两本小说,作为教学大纲上最后一本读物，这样做的练习的目的是,让你去思考这个时期的意义。

耶鲁公开课 - 1945年后的美国小说课程节选