Dicovalent carbon
[机] 二价碳
🧩 词语组成解析
🗣️ 情景例句
How's your son getting on with his English?
你儿子的英语学得好吗？
Well, it really was a great honor to speak to you.
好了，能跟大家聊一聊非常荣幸。
The race gave everyone a great deal of pleasure.
这次比赛使每个人都挺开心。