The chalk line has been wiped away to-day, but the confining ring is still there.

如今那道粉笔线是抹掉了，但那个禁圈仍然存在。

youdao

Use a chalk line to snap a line on the floor between the columns to indicate the location of the bottom plate.

用粉笔线，以抓拍的列之间楼板线来表示底板位置。

youdao

He would put me into a selected spot and, tracing a chalk line all round, warn me with solemn face and uplifted finger of the perils of transgressing this ring.

他把我放在一个他选好的地方，用粉笔在我站的四周划了一个圆圈，然后一本正经地竖起指头警告我，说只要我一越过这个圆圈便会有灾祸临头。

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.

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.

FORBES