Material quantity variance
[经] 材料数量差异
🧩 词语组成解析
material
[mə'tɪrɪəl]
n. 材料，原料;素材;布，织物;适当人选;
adj. 物质的;肉体的;重要的，决定性的;辩证的，推论的;
variance
['vɛəriəns]
n. 变化，变动;不一致;分歧;<数>方差;
🗣️ 情景例句
How did you get on in your exam?
你考得怎样？
I want to make an overseas call to the United States?
我想打个电话到美国去。
By then, however, in many places the grass had already taken root.
然而到那时，很多地方的草已经生了根。