Permineralization
完全矿化
🗣️ 情景例句
Let me know by the end of the week.
这个周末前给我回音。
My uncle had a heart attack last year.
我的叔叔去年患了心脏病。
I'm here! said Jim. And so is Polly!
“我在这儿！”吉姆说，“波利也在这儿！”