Polyisoprene
n. [化]聚异戊二烯
🗣️ 情景例句
I'm staying in a holiday resort.
我正呆在一个度假胜地。
I'm working on it.
我正在努力。
I've been working so hard recently that I haven't had any time for collecting new stamps.
最近我的学习一直很紧张，没有时间收集新邮票。