Pma.
[医] 龈炎发病率(P为乳头,M为龈缘,A为龈附丽)
🗣️ 情景例句
We have talked of you ofter.
我们经常谈到你。
Do you know the percentage of the damaged portion?
你们知道残损部分的百分比吗？
like the cooling of a hot kettle or the wearing-out of a pair of shoes.
就像一壶热水迟早会凉下来，一双鞋渐渐会磨破一样。