Quadrivalent
a. 四价的\\n[医] 四价的
✅ 同义词
🗣️ 情景例句
You remember that day, Robbie?
你还记得那天吗 Robbie
You have to be there half an hour before departure time.
你要在起飞前半小时到那里。
Yes, I'll be free. I'd like to go.
是的，有空。我想去。