Pericementitis
[醫] 牙周膜炎
??? 情景例句
I don't know if I can get to sleep.
我不知道我能否睡得著。
Deeds, no words.
不要光說不練。
Only very thrifty children manage to fill up a money box.
但是能把儲蓄罐裝滿的只有屈指可數的幾個特別節儉的孩子。