Cellular cementum
[医] 含细胞牙骨质
🧩 词语组成解析
n. 牙骨质, 水门汀
🗣️ 情景例句
I have a daughter.
我有一个女儿。
I asked him to leave immediately, but he wouldn't.
我请他马上离开，但是他不肯。
Let me see. It's about four thirty.
我看看，大约四点半了。