Polyisoprenes
(polyisoprene 的复数) n.[化]聚异戊二烯
🗣️ 情景例句
I recently broke up with my boyfriend. I was really bummed out.
最近我和男朋友分手了。我真沮丧。
I know the boy whose father is a missionary.
我知道那个男孩的父亲是传教士。
We're tired ...
我们累了。。。。。。