To make it,you need a milk carton, a pencil,a ballpoint pen, scissors and a pencil sharpener.

VOA: special.2010.12.28

Take the fattest marking pen you have, scratch that out and replace it with atomic hydrogen.

用你最粗的笔把它划掉，再用氢原子代替它。

麻省理工公开课 - 固态化学导论课程节选

And, believe it or not, I have students walk in and first thing a hand goes up and says do you have a pen? I cannot believe it.

不管信不信，我有些学生走进来，第一件事就举起手问,你有没有笔，难以置信。

麻省理工公开课 - 固态化学导论课程节选

We don't, of course, have any original copies of these materials as they came off the pen of whoever it was who was writing them, and in fact before the middle of the twentieth century, our oldest manuscripts and fragments of manuscripts of the Bible dated to the year 900.

我们当然没有任何最早时期那些笔者的,手稿，而且事实上,在20世纪中期之前我们有的最古老的手稿,和手稿碎片都是公元900年时候的。

耶鲁公开课 - 旧约导论课程节选

If I had a competition where I'd give $100,000 to the person who looks the most as if they are in pain, it is a very good tactic to take a pen and jam it into your groin because you will look extremely persuasively as if you are in pain.

如果我在这里举行一个竞赛,谁最能将痛苦表演的和真的一样,谁就能拿到10万美元，那么最好用的一招莫过于拿根笔,狠狠地戳进你的腹股沟,因为此时的你看上去真的,足以使他人相信你非常痛苦。

耶鲁公开课 - 心理学导论课程节选