Osteodentin
[医] 骨性牙质
🗣️ 情景例句
We sure do, Dad.
当然 ，爸爸。
No,I don't understand.
不，我不明白。
It is well known that where the white man has invaded a primitive culture,
众所周知，凡是白人侵入原始文化的地方，