Chertification
[地质]燧石化
🗣️ 情景例句
Well, good night.
好吧， 晚安。
Yes. And please ask me the next time you want to use something.
是的。另外，如果下次要用什么东西，请先问我一声。
Could you tell me where I can wash my hands?
请问洗手间怎么走？