Polybutyrolactam
[化] 聚丁内酰胺; 尼龙-4
🗣️ 情景例句
That's it. There.
很好。啊。
He may get a grant to study abroad next year.
他明年也许会获得留学奖学金。
A piece of cheese.A loaf of bread.A bar of soap.
一块乳酪、一块面包、一块肥皂、