Physical variance
[经] 效率差异, 实际差异
🧩 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
Don't mention it. What would you like to drink?
别客气，想喝点什么？
Did you send it to him yourself?
你自己亲自送给他吗？
He says nothing about the poor selection of goods in the shops, or about those unfortunate people who have to travel from the country to the city every day to get to work.
他也不说商店货物品种单调，以及那些每天不得不从乡下赶到城里工作的不幸的人们。