Dicovalent carbon
[机] 二价碳
🧩 词语组成解析
🗣️ 情景例句
He emphasized that Marxism was scientific truth.
他指出马克思主义是科学的真理。
Well, it's too bad that you have to go.
哦，真遗憾，你一定要走。
We'll order after we see the sample.
我们要看过样品才会下订单。