Quadratics
n. [数]二次方程式论
🗣️ 情景例句
The Post Office aims to improve its quality of service.
邮局锐意改善服务质量。
Keep your mouth shut and your eyes open.
要多看少说。
Please sign here to show that you have received the money.
请在这儿签字以表明你已收到这笔钱。"