Dicovalent carbon
[机] 二价碳
🧩 词语组成解析
🗣️ 情景例句
He is not cut out for teaching.
他不是当教师的料。
He who would climb the ladder must begin at the bottom.
爬梯必须从底层开始。
Mr.Thompson is going to sell it because it is haunted.
汤普森先生之所以想卖它，是因为那里常闹鬼。