Polybutyrolactam
[化] 聚丁内酰胺; 尼龙-4
🗣️ 情景例句
And a good paint job.
还需要好好的粉刷。
Take care of the pence and the pound will take care of themselves.
金钱积少便成多。
Are these your apples?
这些是你的苹果吗？