Population variance
[化] 总体方差
🧩 词语组成解析
variance
['vɛəriəns]
n. 变化，变动;不一致;分歧;<数>方差;
🗣️ 情景例句
He was ill at ease with people whom he didn't understand.
他和不熟悉的人在一起感到不自在。
You saw that movie, didn't you? Was it interesting?
你看过这部电影了吧？精彩吗？
I hope not. She says she's got a headache and a cough. Perhaps she's caught a cold.
我也但愿如此。她说有点头痛，还咳嗽。也许是感冒了。