工人正在磨碎石头，制成粉末。

Gōngrén zhèngzài mó suì shítou, zhì chéng fěnmò.

Workers are grinding stones to make powder.

这种药物是以粉末形式服用的。

Zhè zhǒng yàowù shì yǐ fěnmò xíngshì fúyòng de.

This medication is taken in the form of powder.

实验室里用粉末做了一些化学试验。

Shíyànshì lǐ yòng fěnmò zuò le yīxiē huàxué shìyàn.

In the laboratory, powder was used for some chemical experiments.