It's just this double bind of vocation that's the subject of Sonnet VII, "How soon hath Time." That's the sonnet in which Milton laments the fact that he has turned twenty-three years old and has yet produced nothing that would indicate a shining poetic future.

第七篇十四行诗的主题就是这种职业窘境，“时间过得多快啊，“弥尔顿在这首诗里表达了,对自己都快23岁却没创作出什么,可以显示出他卓越天赋的诗的哀伤。

耶鲁公开课 - 弥尔顿课程节选

Remember we talked about how DNA replicates itself and that there are enzymes, DNA polymerase that bind to the double stranded DNA, separate it, denature it locally, and then start the process of replication.

请记住DNA复制必须有酶的参与,DNA聚合酶结合在双链DNA上,打开双链并原位变性,然后才开始复制

耶鲁公开课 - 生物医学工程探索课程节选