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
I'm really excited about seeing Grandpa.
一想到要见到爷爷， 我就觉得兴奋。
When ale (or drink or wine) is in wit is out.
贪杯丧智。
Chaplin was born in London in 1889 and first acted when he was five years old.
卓别林1889年出生于伦敦，5岁时就开始演戏。