Positive definite inner product
[计] 正定内积
🧩 词语组成解析
positive
['pɑzətɪv]
adj. 积极的;确实的，肯定的;[数]正的;[医]阳性的;
n. 正面;正片;[语]原级形容词;[数]正量;
posit肯定+ive形容词后缀 → 肯定的；积极的
inner
['inə]
adj. 内部的，内心的;精神的;秘密的;
n. 内部，里面;射中接近靶心部分的一发;
🗣️ 情景例句
I know.
我知道。
We tried in vain to make him change his mind.
我们试图使他改变他的主意，但白费力气。
He was known to us all as Dickie and his eccentricity had become legendary long before he died.
大家都管他叫迪基。早在他去世前很久，他的古怪行为就成了传奇故事了。