The problems that Frost's poetry poses for us as readers are not problems of reference. They can't be solved by footnotes.

他的诗歌给我们的困难,不是参考的问题，它们不能就用脚注解决。

耶鲁公开课 - 现代诗歌课程节选

Now there's a lot of variation in that: men would be different from women, taller more then shorter, all that sort of thing, but nonetheless let's just use that as a reference.

当然随情况会有不同变化,男人需要的比女人多,高的比矮的多,像这类情况,但我们用这数据做个参考

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选