Karstification
n. [地]喀斯特(或岩溶)作用
🗣️ 情景例句
if it's all right with your dad.
假如你爸爸答应的话。
Can I take you out to dinner? It'll be my treat.
我带你出去吃饭好吗？这次我请客。
Do you still have the cock year stamp?
你还有鸡年的邮票吗？