Quadric
a. 二次的\\nn. 二次曲面
🗣️ 情景例句
Don't rely on you mood when making decisions.
决策的时候不要意气用事。
Love sought is good, but given unsought is better.
追求而得的爱情固然美好，但不经追求而得的爱情更为美好。
I lent a pan to you two weeks ago. I've come to get it back again.
两个星期以前我借了一只锅给你。我来拿我的锅。