Think, in "Birches," of really the extraordinary play of language, the freedom of association, all of which is being played off of the strict demands of the meter, at every moment.

想想，“桦树“，是无与伦比的对语言的把玩，自由的结合，所有这些都在格律诗严格的要求下自由地被使用着，每时每刻。

耶鲁公开课 - 现代诗歌课程节选