Draw a line of chalk or sprinkle baby powder across the spot where the ants are entering your home.

在蚂蚁进入你家的痕迹上用粉笔画一条线或者把婴儿粉撒上阻隔它。

youdao

Chalk line: Use it to snap straight guidelines for cutting plywood or laying floor tile.

粉笔线：准则切割胶合板或铺设地板砖用它来来划线。(不知道这个翻译是不是准确！)

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To mark the hold you? Re going for with a bright white chalk-line is an underestimated method to improve your timing.

把你想要抓住的目标点用白色粉笔做上鲜明的标记，虽然这常常是被低估的一个方法，但它的确会帮助到你。

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

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.

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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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