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
This is your big night.
今儿晚上可是你的好日子。
I dress my sister and wash her hands and face.
我给我妹妹穿衣服，洗脸洗手。
Some old people are oppressed by the fear of death.
有些老年人因为怕死而感到烦恼。