粉筆的用法和樣例：
例句
-
我們學校同最近的一家商店每月訂購50盒粉筆。
Our school contracted with the nearest shop for50 boxes of chalk a month. -
男孩子們在運動場的牆上用粉筆畫上了球門柱。
The boys chalked out goalposts on the playground wall. -
把你自己身上撣撣--上面都是粉筆末。
Dust yourself down you're covered in chalk. -
老師用一支粉筆在黑板上寫字。
The teacher wrote on the blackboard with a piece of chalk.
