请让我介绍一下今晚节目的第一位嘉宾…

May I introduce my first guest on the show tonight...

《牛津词典》

当你的老师在你的第一堂实验课前阅读和解释规则时，请仔细听。

Listen carefully when your teacher reads and explains the rules before your first lab lesson.

youdao

请给我拿三张第一类邮件的邮票。

Could I have three first-class stamps, please?

《牛津词典》

One is there's no lag period, notice that antibody levels start rising right away after the second exposure.

第一是没有迟滞期,请注意,抗体浓度迅速上升,在第二次接触抗原时

耶鲁公开课 - 生物医学工程探索课程节选

OK? And in fact, if you look at the code up here, and it's on your handout, the very first one, x 1, right here- if I could ask you to look at it-- is a piece of code to do it. And I'm less interested in the code than how we're going to analyze it, but let's look at it for a second.

实际上，如果你看看,你们课堂发的材料上面的代码，第一页上的，就是那-,大家请看看实现的这一部分代码,我不太关心,我们会怎么解释这个代码,首先让我们先看看。

麻省理工公开课 - 计算机科学及编程导论课程节选