Acellular cementum
[医] 无细胞牙骨质
🧩 词语组成解析
a. 非细胞的,非细胞组成的
n. 牙骨质, 水门汀
🗣️ 情景例句
The plane's been delayed 10 minutes.
飞机晚点了十分钟。
Did you go swimming yesterday?
你昨天去游泳了吗？
She's been there for two months. She's been there since September.
她进校有两个月了。她自9月份起便在那儿学习了。