Chronic gingivitis
[医] 慢性龈炎
🧩 词语组成解析
n. 齿龈炎
🗣️ 情景例句
This dog is well trained.
这只狗受过很好的训练。
A true friend is known in the day of adversity.
疾风知劲草，患难知友情。
No, it isn't, said the detective suddenly.
不，不对，侦探突然说。