这时，那支粉笔断了，只剩下一个粉笔头。

Then the stick of chalk broke end I was left with a stump.

youdao

想象一个简单的物体，例如，一支粉笔。

Think of a simple object—a piece of chalk, for example.

youdao

有一个他们休息的吊床，一个跳绳的地方，一个在洒水车里玩耍的地方，还有一个用粉笔写字的地方。

There's a hammock they lounge on, a spot to jump rope, a place to play in the sprinkler, and an area to write with sidewalk chalk.

youdao

It could be that a random distribution-- I don't have colored chalk here I don't think, so I will use a dash line to represent the fat-tailed distribution.

这是一个随机分布,这里没有彩色粉笔,我就用虚线,来表示长尾分布

耶鲁公开课 - 金融市场课程节选

Let me draw a quick picture in chalk here.

我用粉笔画一个简单的图。

哈佛公开课 - 计算机科学课程节选