Sample variance
[化] 样本方差
🧩 词语组成解析
sample
['sæmpl]
n. 样品，华样;标本，榜样;（化验的）取样;[信]信号瞬时值;
vt. 取…的样品，尤指用样品来检验;品尝;抽样调查;
adj. 作为代表或范例的;
s分开+ample拿，获得→分开拿出→标本,样品
variance
['vɛəriəns]
n. 变化，变动;不一致;分歧;<数>方差;
🗣️ 情景例句
That's right. Grandpa hangs it there for good luck.
是的。爷爷把它放在那儿 以求好运。
I usually feel timid in the presence of very bright people.
站在聪明人面前，我感到羞怯。
Look at his big teeth. Isn't he bigger than you?
瞧他的大牙齿。他的块头不是比你大吗？