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
and just enjoy this beautiful spring day.
尽情享受这美好的春天。
How did you decide that product was safe?
你怎样决定产品是安全的呢？
I grew a beard during the trip.but I shaved it off when I came home.
我在旅行时留了胡子，但我回到家时就把它刮了。