Put it on a wet sponge to clean crayon off a chalk board.

湿海绵上放些小苏打可以擦掉黑板上的粉笔画。

youdao

You can even ward off ants with chalk.

你甚至可以用粉笔来躲避蚂蚁。

youdao

The chalk fell off the desk and broke.

粉笔从书桌上掉下来摔断了。

youdao

Conservationists warn that recently revealed chalk arches off the North Norfolk coast could be destroyed by one careless pass of a trawl net.

BBC: Cash shortage stretches to sea bed

Many people will laugh this off, chalk it up to those crazy Scots, and move on.

FORBES: The Creation Of A Hashtag Is Not Your Decision

His six-man chalk was a quarter of a row, separated off by the gray vinyl screens.

NEWYORKER: Wiggle Room