Osteodentin
[医] 骨性牙质
🗣️ 情景例句
and you won't get so many colds anymore.
你就不会老患感冒了。
I was born on November first,nineteen thirty-five.
我是一九三五年十一月一号。
I may be able to start a small school.
那么，我也许能够开办一个小型的学校。