碎粉

例句：

1. 1. The chef used a mortar and pestle to crush the ingredients into a fine powder.
   厨师用研钵和杵将食材研磨成细粉。
2. 2. The scientist mixed the chemicals in a jar of powdered sugar.
   科学家在糖粉的罐子里混合了化学物质。
3. 3. The engineer ground the metal into small pieces to make the powder for the machine.
   工程师将金属磨成小块，制成机器所需的粉末。