Gingivitis
n. 齿龈炎
✅ 同义词
📖 牛津释义
gingivitis
n[U]
(medical 医) inflammation of the gums 龈炎.
🗣️ 情景例句
No one knows for certain what happened, but it's a fair bet that it was not an accident.
没有人知道究竟发生了什么，但几乎可以肯定这并非意外。
I'm afraid not. She doesn't have any openings in the morning.
恐怕不行。上午她没有空。
Pumas are large, cat-like animals which are found in America.
美洲狮是一种体形似猫的大动物，产于美洲。