Peridontia
(=periodontia)牙周病学
🔁 扩展释义
【医】 牙周病学
🗣️ 情景例句
It's a great college.
那是一所好大学。
Obedience is the first duty of a soldier.
服从是军人的第一职责。
The sandwiches were on the plates, and the candles were on the cake. Ann felt very happy.
三明治在碟子里，蜡烛插在蛋糕上。安觉得很愉快。