Paramenstruum
n. [医]经前及行经初期(指行经前4天和行经最初4天)
🗣️ 情景例句
Oh no! Is it serious?
噢， 糟糕， 严重吗？
No good building without a good foundation.
基础不好，建筑不牢。
What is it? asked the man.
“什么事？”楼上人问。