Polyisobutene
聚异丁烯; 聚异丁烯
🗣️ 情景例句
It is already.
现在已经很兴奋了
Yes, you can. Would you please show me your card?
可以，让我看看您的卡。
I'll have apple pie with ice cream and jam sauce.
我要一份苹果饼，淋上冰淇淋和果酱。