Quadratic performance index
[计] 二次性能指标
🧩 词语组成解析
a. 二次的\\nn. 二次方程式
index
['ɪndɛks]
n. 索引;<数>指数;指示;标志;
vt. 给…编索引;把…编入索引;[经济学]按生活指数调整（工资、价格等）;
vi. [机械学]转位;
in(in)+dex(proclaim)→指针；索引；指数；食指；指标
🗣️ 情景例句
Are you sending it by regular or by speed?
你要寄平信还是快递？
Jeff was not pleased with his school grades.
杰夫不满意自己在学校的成绩。
Today there are special kindergartens for Maori children, and the Maori language is now taught in more and more schools.
如今已有专门为毛利儿童而设的幼儿园，而且在越来越多的学校里讲授毛利语。