Quaternary carbon atom
[化] 季碳原子
🧩 词语组成解析
a. 四个一组的, 四元的, 四价的, 季的\\n[计] 四进制的, 四元的
🗣️ 情景例句
Sorry.
对不起。
We prepared a picnic lunch and drove down by the river.
我们准备了野餐午餐并沿河边向下开车。
It looks as if she's gone away for a few days.
好象她要外出好几天了。