mortar box

• 研钵

mortar box的用法和样例：

例句

1. He ground the rock candy with a mortar and pestle.
   他自己动手用研钵和杵把冰糖研成粉。
2. When the bead has cooled on the metal sheet transfer it to a mortar and grind to a fine powder.
   当球珠已在金属板上冷却，把它转移到一个研钵里，研磨成细粉。