Pma.
[医] 龈炎发病率(P为乳头,M为龈缘,A为龈附丽)
🗣️ 情景例句
There's nothing wrong with hard work.
刻苦没错。
The crowd gasped with astonishment.
大家惊讶的屏住呼吸。
It went direct from my local station and the journey lasted mere hour and seventeen minutes.
这是趟直达车，旅途总共才需1小时17分钟。