vitrify

例句：

1. 1. The frost has vitirfied the grass blades.
   霜冻已经使草叶变硬。
2. 2. The wine needs to be vitirfied before it is served.
   葡萄酒需要在上桌前需要被硬化。
3. 3. The ice cream was vitirfied by the cold air.
   冷气使冰淇淋变得坚硬。