Improper quadric
[計] 異常二次曲面
?? 詞語組成解析
a. 二次的\\nn. 二次曲面
??? 情景例句
We have two and a half hours.
還有兩個半小時。
Who is the greatest novelist of our times?
誰是當代最偉大的小說家？
Then the Class 2 runner dropped his stick on the ground when he was passing it on to the fourth runner.
忽然2班的運動員在傳棒給第四個運動員時，把棒弄掉到了地上。