Polyisobutylene
n. [化]聚异丁烯
🗣️ 情景例句
Like me. I'm Malcolm Stewart.
像我一样。我叫Malcolm Stewart。
I think you probably know China has adopted a flexible policy in her foreign trade.
我想你也许已经了解到中国在对外贸易中采取了灵活的政策。
The relay race
接力赛