Pma.
[医] 龈炎发病率(P为乳头,M为龈缘,A为龈附丽)
🗣️ 情景例句
The fifth word.
第五个字。
One cannot get blood from a stone.
石头里抽不出血。
Little by little the eleven minutes fell to zero.
慢慢地从11分钟减到了零。