Retropulpitis
逆行性牙髓炎
🗣️ 情景例句
OK. I'll show you around. Let's go outside.
可以，我带您转一转。走吧。
I think it's going to crack soon.
我认为它将很快杯打碎。
Could we see the specifications for the X200?
我们可以看一下X200型的详细规格吗？