Cementification
牙骨质形成
🗣️ 情景例句
Keeping busy. Yourself?
一直很忙，你呢？
The chief aim of man is not to get money.
人生的主要目的不是为了挣钱。
Later a neighbour told me about him.
后来，一位邻居告诉了我他的情况。