Material standards
[经] 材料标准
🧩 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. 标准；规格（standard的复数）
🗣️ 情景例句
He'll do anything to avoid getting down to math lessons,
他老是设法想逃避数学，
As soon as he comes, we'll let him know.
他一来，我们就告诉他。
There comes a bus.
汽车来了。