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
No, I have to turn it in in the morning.
不行 ，明天上午我得交出去。
You must reap what you have sown.
种瓜得瓜，种豆得豆。
Diamond necklaces and rings had been beautifully arranged on a background of black velvet.
钻石项链、戒指漂亮地陈列在黑色丝绒上面。