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
Good night, Harry. It was nice meeting you. Harry
很高兴与你见面。
Excuse me, what time will the plane arrive in Tokyo?
对不起，请问飞机何时到达东京呢？
Some of the apples are hard to reach.
有些苹果很难够得着。