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
The patient showed a marked improvement.
病人病情显著好转。
I don't want to be lonely the rest of my life.
可我不想余生过得那么孤独。
I'm calling about mistake on our last invoice.
我打电话来，是因为上回的发票有错。