She says one slum in Nairobi,Mathari,has only about three public primary schools nearby.

VOA: special.2009.08.24

Incidentally, you also have human rights, but these are only fulfill to the extent that other people understand their own primary obligations first.

顺便说一句，你也有人权，但要行使这些权利必须,先使他人明确他们自己的首要责任。

普林斯顿公开课 - 人性课程节选

That's not the only place but that's a primary source of it.

这不是唯一的出处,但是最主要的来源

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Eliot was there, in that essay on the metaphysical poets that I'm quoting from, defending as necessary what is the primary characteristic, not only of his own poetry, but really of modern poetry generally, what is often called its difficulty.

艾略特在描写那些抽象派诗人的文章里,就是我引用的那篇，极力维护,诗人的首要特征，不仅是因为他自身的诗性，更因为维护现代诗歌的必要，这是非常困难的一件事。

耶鲁公开课 - 现代诗歌课程节选

One of the things that I didn't mention before is that when you get this primary response and then the secondary response, if you looked at the antibodies that are generated during the primary response, again we're only looking at antibodies that bind to the particular antigen or vaccine that we have used for the priming.

还有一点我之前没有提及,当你获得初次免疫,以及再次免疫之后,如果你仔细观察抗体,观察那些在初次免疫中生成的抗体,这次我们同样只是观察抗体,那些与我们在初次免疫中所用到的,特定抗原或疫苗相结合的抗体

耶鲁公开课 - 生物医学工程探索课程节选