Materials quantity variance
[经] 材料数量差异
🧩 词语组成解析
materials
[[mə'tiəriəlz]]
n. 材料；材料费；材料科学；材质（material的复数）
variance
['vɛəriəns]
n. 变化，变动;不一致;分歧;<数>方差;
🗣️ 情景例句
She is indifferent to other people's suffering.
她对别人的痛苦漠不关心。
My head has been hurting.
我头痛。
For once, Harry had to admit defeat.
哈里只好认输。