Retropulpitis
逆行性牙髓炎
🗣️ 情景例句
We usually ship the goods by regular liners.
我们一般是定期班轮装运货物。
Kill the goose that lays the golden eggs.
杀鸡取金蛋；只图眼前需要，断绝将来财源。
This is a good photograph.Who are these people?
这是一张很好的照片。这些人是谁。