His father's death, when Frost was a boy, represented, among other things, an economic crisis for his family. Frost's schooling was erratic.

他小时候父亲去世，因为他家陷入了经济危机,所以他上学总是断断续续。

耶鲁公开课 - 现代诗歌课程节选

You remember that Freud said we have to infer the unconscious from the erratic behavior of consciousness.

弗洛伊德曾经从,平常行为中的古怪中寻找潜意识。

耶鲁公开课 - 文学理论导论课程节选