And then since we have my red laser pointer, we will also try with the red laser pointer, which is centered at wavelength of 700 nanometers.

然后因为我们有我的红色激光笔，我们也可以用它试一下，它的波长集中在700纳米处。

麻省理工公开课 - 化学原理课程节选

but I mark the whole paper up with a lot of red ink if there are mistakes,

但我在批论文的时候，也会把语法错误的地方用红笔标出来，

与哲学系教授 - SpeakingMax英语口语达人

Here I was, back at Yale, with a billion dollar portfolio -it seemed like a lot of money at the time no portfolio management experience.

那时我在耶鲁,要管理上十亿美元的投资组合,在当时,那是笔巨款,而我却没有任何投资组合管理经验

耶鲁公开课 - 金融市场课程节选

I lost my black marker but that doesn't matter.

我找不到黑色的笔了不过没关系

耶鲁公开课 - 聆听音乐课程节选

Now, if you guys are using your computer or you have a pen, I'd just like you to write down what your estimates are of a few foods I'll show you and see what you say.

使用你们的电脑,或者拿起支笔,请写下对以下我展示的一些食物,卡路里的估测,让我们看看结果

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选