Karstification
n. [地]喀斯特(或岩溶)作用
🗣️ 情景例句
It puts you to sleep.
它让你很快入睡。
He is having a nightmare.
他在做着噩梦。
Forty-two years later a tunnel was actually begun.
42年以后，隧道实际已经开始建了。