Polyacrylonitrile
n. [化]聚丙烯腈
🗣️ 情景例句
but he usually managed to squeeze a Sunday in
但是他总会设法挤出星期天，
After eating breakfast,I go back upstairs again.
在吃早餐以后，我再回楼上。
They come in cases of five.
它们是五个一箱。