In climates where temperatures fall below freezing, plant mums at least six weeks before the first frost is expected.

VOA: special.2010.06.29

On your handout today, the handout number two, we have--well, there are several quotations from Frost's letters, and let's look at the first one first.

在今天的第二章发出的材料里面，有些弗罗斯特写的信件里面的话，我们先看看第一段。

耶鲁公开课 - 现代诗歌课程节选