Crustification
n. 结壳, 用覆盖物, 镶嵌, 硬壳
🗣️ 情景例句
I must prepare my lessons.
我必须准备工课。
I know he will do something.
我知道他会做什么。
She works very hard and is very helpful.
她工作非常努力，对同学们帮助很大。