Bivalent cation
[机] 二价阳离子
🧩 词语组成解析
a. 二价的\\n[化] 二价的
cation
['kætaiən]
n. 阳离子;
🗣️ 情景例句
I have just begun to learn and my serve isn't very good.
我刚刚开始学习，发球不太好。
Have you ever been to Japan?
你去过日本吗？
Although we can't see these atoms, they really do exist.
虽然我们看不见原子，但它们的确存在。