Encrustment
结垢, 皮层
🗣️ 情景例句
I hope to be able to join the school band.
我想加入学校的乐队。
Do now waste them, but use them while they are fresh.
不要浪费了这些，要趁未落伍时善加利用。
What are you then?
那你是什么国家的人呢？