If you have some plain text, some message that you want to send, well, you can encrypt it or you can scramble it using a key, a secret key, which might be a physical machine like the Enigma 13 or it might be a number like 13.

如果你有没有加密的文本，你想要寄送的一些消息,你就可以加密它,或者你可以用一个密钥使其变得混乱，那就像一个英格玛的物理装置,或者他就是一个数字。

哈佛公开课 - 计算机科学课程节选

The first paper is going to ask you to write about one short poem; the second will ask you to write about two or more poems, or poems perhaps by two authors, or perhaps a poem and some other kind of text or image.

第一篇论文会要求你们介绍一篇短诗;,另一篇则是要求描述几首诗，或者是任意两位作者的诗，又或者是一首诗以及一篇课文或者一幅图画。

耶鲁公开课 - 现代诗歌课程节选