Quadrics
二次型
🗣️ 情景例句
It was so exciting to meet her again after so many years.
多年以后和她再相遇是多么让人激动啊!
A duck will not always dabble in the same gutter.
一只鸭子不会常在同一条沟中玩水。
The wagging dance meant that food was far away.
摇摆舞表示食物在远处。