Material alterations
[经] 重要变更, 实质性改变
🧩 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;
n. 改变；变更；服装修改（alteration的复数）
🗣️ 情景例句
but ... but I've been noticing
但……但我注意到
She began playing the violin when she was nine.
九岁的时候，她开始拉小提琴。
What's the time?
几点了？