Osteodentin
[医] 骨性牙质
🗣️ 情景例句
It really doesn't matter at all.
真的没关系。
No. I went to California for a few weeks.
没有。我上加利福尼亚去了几个星期。
those who are worried to death, and those who are bored to death.
忧虑至死的人、无聊至死的人。