People who have never heard of a macaron usually confuse it with the much better known treat spelled with two Os,the macaroon.

VOA: special.2010.04.12

How would it strike you if you knew nothing about it, if you had never heard of it before, if you open up the covers of this book for the first time?

如果你对新约一无所知，如果你对新约为所未闻，如果这是你，第一次翻开新约，会有什么感觉？

耶鲁公开课 - 新约课程节选

You cannot say, "I never heard of it. I don't know where it came from."

你就不能再说,"我从没听说过,我不知道它是怎么来的"

耶鲁公开课 - 基础物理课程节选

It doesn't matter if you've never heard of them or if you never think of them again-- but, Titian. The famous Titian.

你们没听说过或者听完课就忘了也没关系,例如著名的提香

耶鲁公开课 - 欧洲文明课程节选