Gb	Eng
男孩子们在运动场的墙上用粉笔画上了球门柱.	The boys chalked out goalposts on the playground wall.
我们学校同最近的一家商店每月订购50盒粉笔。	Our school contracted with the nearest shop for50 boxes of chalk a month.
把你自己身上掸掸--上面都是粉笔末.	Dust yourself down you're covered in chalk.