Quadratic equation
[计] 二次方程
📖 牛津释义
quadratic equation
(algebra 代数) equation that uses the square (and no higher power) of an unknown quantity, egx2 + 2x
8 = 0 二次方程式（如x2 + 2x
8 = 0）.
🧩 词语组成解析
a. 二次的\\nn. 二次方程式
🗣️ 情景例句
You look very young. How old are you?
你看起来真年轻， 你多大了？
Yes. Please do.
好，请说。
I've been working so hard recently that I haven't had any time for collecting new stamps.
最近我的学习一直很紧张，没有时间收集新邮票。