Pma.
[医] 龈炎发病率(P为乳头,M为龈缘,A为龈附丽)
🗣️ 情景例句
Always remember to wash your hands before eating.
用餐前谨记要洗手。
He who follows two hares is sure to catch neither.
追逐两只兔，两头都落空。
You can print the telephone number of your information service in the newspaper.
你可以把你的问讯服务的电话号码登在报纸上。