That's where you're just asked over a period of time, how often you eat this list of foods and you're given a very long list of foods.
正如同你们刚才问的,你多久吃一次这些食物,你有一个很长的食物列表
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选
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