Polyisobutene
聚异丁烯; 聚异丁烯
🗣️ 情景例句
Dr. Tyler's office. Good morning.
早上好，泰勒医务所。
No bees, no honey; no work, no money.
没有蜜蜂就没有蜜，没有劳动就没有钱。
She was soon out of breath, but she continued to run.
只追了一会儿便上气不接下气了，但她还是继续追赶。