Retropulpitis
逆行性牙髓炎
🗣️ 情景例句
I've never worn them before.
我从来没有戴过这个。
Sorry, Mr. Green can't see you now.
对不起，格林先生现在不能见您。
Some old people are oppressed by the fear of death.
有些老年人因为怕死而感到烦恼。