Cemental fibers
[医] 牙骨质纤维
🧩 词语组成解析
a. 白垩质的
n. 纤维（fiber的复数）
🗣️ 情景例句
Oh, hello! How nice of you to remember us!
噢， 好， 真好， 还记得我们！
I'm sorry, but I can't find the book you lent me.
很抱歉！我找不到你借给我的那本书了。
An even harder situation is to be on the platform in good time for a train and still to see it go off without you.
更难堪的情况是虽然及时赶到站台上，却眼睁睁地看着那趟火车启动，把你抛下。