I have a pen and a pencil.

我有一支钢笔和一支铅笔。

youdao

I have a pen.

我有一支钢笔。

youdao

I have a pen and a pineapple.

我有一支笔和一个菠萝。

youdao

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

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

But I notice you have a fountain pen, a ballpoint pen in front of you, and occasionally you will just touch it and look at it and it appears as if you're focusing yourself.

NPR: Memoir Offers an Inside Look at Autism

I'm glad I had a pen in my pocket, because I don't have any other props here.

NPR: Memoir Offers an Inside Look at Autism