Cations
n. 阳离子；正离子（cation的复数）
🗣️ 情景例句
Strike while the iron is hot.
趁热打铁。
How did you sign the letter?Did you write, sincerely yours?
你怎么签名信的?你写了"真诚地你的"？
Let's go and take a look at it.
让我们去看看吧！