Quadrivalence
n. 四价\\n[医] 四价
🗣️ 情景例句
Hurt? What do you mean?
酸痛， 什么意思？
I hope you're enjoying your stay here.
我希望你能在这里过得愉快。
Why do you keep asking me the same question?
你怎么又问我同样的问题？