Pma.
[医] 龈炎发病率(P为乳头,M为龈缘,A为龈附丽)
🗣️ 情景例句
Well, there are Dragon Boat Festival, Mid-autumn Festival, Chung Yeung Festival and so on.
嗯，还有端午节、中秋节、重阳节等等。
He is teasing a friend.
他在愚弄朋友。
Work on it had begun before my sister left.
这栋房子在我姐姐离开之前就已动工了，