Polyisobutene
聚异丁烯; 聚异丁烯
🗣️ 情景例句
I had a really bad day.
今天真是糟透了。
No. It's out of the question.
哪儿的话，根本谈不上赔。
New technology has also made its own contribution to noise.
新技术也为噪音作了它的贡献。