Polyisobutylene
n. [化]聚异丁烯
🗣️ 情景例句
but just right for us.
但正好够我们住。
It's up to you.
由你决定。
In a few minutes he returned with my bag and gave it back to me.
一会儿工夫他拿着我的提包回来了，把它还给了我。