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
Are all the classes within walking distance?
所有的教室都在步行范围之内吗？
Why don't you turn off the stupid program?
何不把无聊的节目关掉？
My wife was wearing a hat that looked like a lighthouse!
我妻子戴着一顶像灯塔一样的帽子。