Pfo
[医][=patent foramen ovale(cordis)]卵园孔未闭（心脏）
🗣️ 情景例句
Then you retired.
然后你退休了。
You are stronger than I am.
你比我强壮。
When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed.
不久前，一架轻型客机偏离了航线，在山区坠毁，飞行员丧生。