Polyisobutylene
n. [化]聚异丁烯
🗣️ 情景例句
But I was lucky enough to have a career as a music teacher
但我很幸运， 有一个音乐教师的事业
It can't be true.
这不可能是真的。
After he had put it on the floor, he promptly went to sleep again.
他把床垫往地板上一放，很快又睡着了。