Composed 1629" -- whether or not that's actually true, and there's some controversy about that -- but nonetheless, the subtitle announces to all who know John Milton that the poet was twenty-one years old at the moment of its composition and that he had therefore just reached his majority.

作于1629“-不管它是否属实，尽管对此也有一些争议，但它向所有知道他的人宣告,诗人创作这首诗时只有21岁,因此他已经超过了多数同龄人。

耶鲁公开课 - 弥尔顿课程节选

And notice by the by, that when we make choices about our future, from the hedonist point of view, at least, there's no particular need to dwell a whole lot on the past, because what's done is done.

需要注意的是，当我们,为未来作选择时，起码享乐主义者认为，不必过分着眼于过去，因为过去的已经过去。

耶鲁公开课 - 死亡课程节选

This particular copy was pretty dog-eared; As a matter of fact, it was a paperback copy and I think it was in about eight or ten different pieces and the people that threw this party remembered that, so they gave me it at this celebration.

我用过的那本已经翻烂了,实际上,那是本平装版,我想书脊也不知断了八处还是十处,组织派对的人还记得,在派对上把这本书给了我作纪念

耶鲁公开课 - 金融市场课程节选

We did the comparison with the elephant or something; a is the second derivative of x and for this problem, when F is due to a spring, we know the force is that by studying the spring.

我们也已经把它与大象或其它东西作过比较,a 是 x 的二阶导数,在这个问题中,F 是由弹簧产生的,我们在讨论弹簧问题时已经知道了力的大小

耶鲁公开课 - 基础物理课程节选