Quadratic sum
[计] 平方和
🧩 词语组成解析
a. 二次的\\nn. 二次方程式
sum
[sʌm]
n. 总数;算术;金额;概略，要点;
vt.& vi. 总计;总结，概括;归纳;
🗣️ 情景例句
OK, Marilyn.
好了， Marilyn
The knife is dirty, Would you bring me a clean one, please?
这刀子是脏的，请你拿个干净的给我。
they are not prepared even to admit the possibility that noise affects people.
甚至不愿承认噪音可能对人有影响。