Simple gingivitis
[医] 单纯性龈炎
🧩 词语组成解析
n. 齿龈炎
🗣️ 情景例句
He's a little quiet.
他有点沉静。
I don't know. You may look in the TV Guide.
我不知道，你可以看看《电视报》。
Some old people are oppressed by the fear of death.
有些老年人因为怕死而感到烦恼。