Polybutyrolactam
[化] 聚丁内酰胺; 尼龙-4
🗣️ 情景例句
His studies advanced steadily.
他的学业不断进步。
I would like you to call me.
我要你打电话给我。
Hello, Jim! Nice to meet you.
吉姆，你好。见到你很高兴！