Pma.
[医] 龈炎发病率(P为乳头,M为龈缘,A为龈附丽)
🗣️ 情景例句
Come and sit down for a minute, Michelle.
过来坐一会儿， Michelle。
Necessity and opportunity may make a coward valiant.
需要和机会，可使懦夫变勇敢。
For a long time.I watched them scurrying around the base of the tree in bewilderment.
在很长一段时间里，我看见蚂蚁围着大树底部来回转悠，不知所措。