Improper quadric
[计] 异常二次曲面
🧩 词语组成解析
a. 二次的\\nn. 二次曲面
🗣️ 情景例句
Go ahead, Joanne.
请讲吧 Joanne。
David would get up early in the morning to deliver newspaper.
戴维一早起床就去送报纸。
It often rains,sometimes quite heavily. Everything grows very quickly.
常下雨，且有时下得很大。万物生长很快。