Polybutyrolactam
[化] 聚丁内酰胺; 尼龙-4
🗣️ 情景例句
We had such a good time at the aquarium.
我们在水族馆玩得真开心。
Let's see you do it!
有本事你做给我看！
Last summer, I went to Italy.
去年夏天，我去了意大利。