Cementification
牙骨质形成
🗣️ 情景例句
I would like a single room.
我想要一个单人间。
Please make an appointment with my secretary.
请跟我秘书定个见面时间。
Jim ran very fast, but Yu Yan from Class 1 ran faster. He began to catch up with Jim.
吉姆跑得非常快，但是1班的余延跑得更快。他开始赶上吉姆。