Efficiency variance
[经] 效率差异
🧩 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
One day, you'll have your own family,
总有一天，你会有你自己的家，
I have come to make sure that your stay in Beijing is a pleasant one.
我特地为你们安排使你们在北京的逗留愉快。
Boiling is always a good way of treating water.
烧开一直是水处理的一种好办法。