Polyisobutylene
n. [化]聚异丁烯
🗣️ 情景例句
But at my age,
但是，像我这般年纪，
Let me do some research on this and get back with you tomorrow.
请让我查查看，明天再给你答复。
There it is!It's in front of your!
那不是么！ 就在你眼前。