Dentinitis
[医] 牙[本]质小管炎
🗣️ 情景例句
Now, tell me, what's the problem?
啊， 告诉我 有什么问题？
Let's fight one-on-one!
来单挑！
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。