I'm mixing it up with a line of Keats, and I'm going to say something else about Keats.

我把它和济慈的一句诗弄混了，待会儿我再讲济慈。

耶鲁公开课 - 文学理论导论课程节选

There is a Homburg and there is a Borsalino, Here's Bohr mixing it up with royalty.

一个是汉堡帽，一个是博尔萨利诺帽，这是波尔和皇室人员。

麻省理工公开课 - 固态化学导论课程节选