Quadratic
a. 二次的\\nn. 二次方程式
🗣️ 情景例句
Philip and I were living with Grandma and Grandpa. Philip
与我和爷爷， 奶奶住在一起。
Could you carry my doggie for me?
你能替我带我的小狗吗？
Don't let me down.
别让我失望。