Bivalence
n. 二价\\n[医] 二价
✅ 同义词
🗣️ 情景例句
I want our children to learn
我要孩子们学习到
A friend is never known till a man have need.
不到患难时，永远不能认识真正的朋友。
Pay cash for this one and then we'll see what we can do.
这次就请付现金，以后我们再看看