Quadratics
n. [数]二次方程式论
🗣️ 情景例句
Glad to know you.
很高兴认识你。
I don't know where I am!
我不知道我身在何处！
Yes, my brother Bob is coming with me to the airport to see me off.
有，我兄弟鲍勃将和我一起到机场，送我上飞机。