Vasodentin
[医] 血管性牙质
🗣️ 情景例句
No such thing as too many at an opening.
展览开幕怎么会嫌人太多呢。
Do you ever study English on Sunday?
你曾经在星期日学英文吗？
I'm not sure I can do it.
恐怕这事我干不了。