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

You can see from this picture of the 1903 World Series that there are no outfield fences, although there was likely a chalk line or a rope marking how close spectators could come to the field.

FORBES: Connect

Whenever I cross the (white chalk) line, I am trying to help the team.

WSJ: Ozuna's 4 RBIs propels Miami to sweep of Mets

"This line, " said the policeman, and he proceeded to draw a line with a piece of chalk.

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