An elderly woman was strewing the floor with chalk so that the dancing shoes would not slip.

一位老妇人正在往地板上撒滑石粉以防止舞鞋打滑。

《柯林斯英汉双解大词典》

I obliterate the word with chalk.

我用粉笔把这个单词涂去了。

youdao

Teachers usually write on the blackboard with chalk.

教师通常用粉笔在黑板上书写。

youdao

What I can do with is some more chalk.

我来换根粉笔好了

耶鲁公开课 - 博弈论课程节选

"Even in their homes they have to write 969 with chalk, " he said.

NPR: PORTRAITS: New Numerology Of Hate Grows In Myanmar

He cites how major supermarket chains are striving to be more Whole Foods-like, with chalk signs boasting daily specials sitting just outside their doors.

FORBES: Back to the Future: Longing for That Personal Mom-and-Pop Touch

But the New York-based company is not the same as it was when it started out with just a four square court drawn with chalk in front of the Austin Convention Center.

FORBES: Foursquare's Dennis Crowley At SXSW: Location Is The Future [Video]