Quadratics
n. [数]二次方程式论
🗣️ 情景例句
So was my night.
晚上也还不错。
The wolf may lose his teeth, but never his nature.
江山易改，本性难易。
The high stern castle was a riot of carved gods,
高耸的船楼上雕刻着令人眼花缭乱的神仙、