Polyacrylonitrile
n. [化]聚丙烯腈
🗣️ 情景例句
It turned out he was Michael's father.
原来他是麦克的父亲。
Bill was very jumpy as he waited for the phone to ring.
贝尔忐忑不安地等着电话来。
The book is protected by copyright.
该书受版权保护。