Quadrivalency
n. 四价
🗣️ 情景例句
Exactly.
正合我意。
A clear conscience is a sure card.
光明磊落，胜券在握。
After I had left a small village in the south of France, I drove on to the next town.
在离开法国南部的一个小村庄后，我继续驶往下一个城镇。