Velamenta infantis
[医] 胎膜
🧩 词语组成解析
[医] 帆, 膜
🗣️ 情景例句
Don't worry about it. It's nothing.
别担心，没事儿。
It's only a matter of time.
这只是时间问题。
He should have known that the police would never allow this sort of thing.
他本该知道警察绝不会允许这类事情发生。