Polybutyrolactam
[化] 聚丁内酰胺; 尼龙-4
🗣️ 情景例句
you spend with Dad and me ... and the family.
你和父亲， 我及全家人共度的。
They that live longest must die at last.
活得最久长，终难免一亡。
No, I haven't. Why? Have you?
没有，我没有。怎么啦？你有吗？