We have no evidence, and I mentioned this before, that there was a particularly close relation between these two young men.

我之前提到过，我们没有证据,去证明这两个年轻人之前有着如何亲密的关系。

耶鲁公开课 - 弥尔顿课程节选

Because on second exposure there's another population of cells that I haven't mentioned before that remain after the primary exposure and those are called memory cells, they're down here.

因为在再次免疫中,有另外一些细胞,我之前并没有提到过它们,在初次免疫结束后保留下来的细胞,被称为记忆细胞,它们在下面

耶鲁公开课 - 生物医学工程探索课程节选

So I would mention those to him before I mention Martin King because I never met Brother Martin. I read about him.

因此在提到Martin，King之前我要先提到他们,因为我从来没有见过Martin，我只读到过他。

普林斯顿公开课 - 人性课程节选