Polyurethanes
(polyurethane 的复数) n. 聚氨酯\\n[化] 聚氨基甲酸酯; 聚氨酯
🗣️ 情景例句
I guess they must have inspected only part of the goods, but not the whole.
我猜想，他们检查的只是部分货物，而不是全部。
I hurried to my office.
我匆忙赶到办公室。
I'm afraid the item you substituted didn't work.
你这代替品恐怕不能用。