Carbocation
碳阳离子
🗣️ 情景例句
What time do you usually have supper?
你通常几点吃晚餐？
He that once deceived is never suspected.
一次行诈骗，永远遇疑嫌。
To get a full appreciation of what this means we must turn first to some recent human inventions.
要透彻理解这句话的意义，我们应先回顾一下人类最近的几项发明。