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
and I'll think of a surprise.
我来想出一个惊喜。
Why didn't you say so?
为什么不早说？
Another cat came to my house.
又有一只猫来到我家了。