Polybutadiene
[机] 聚丁二烯
🗣️ 情景例句
We're here to catch our lunch.
我们要在这里钓我们的午餐。
When Emily came home at three in the morning, her father hit the ceiling.
哎米莉在凌晨2点钟回家时，她父亲大发雷霆。
Hello!
你好！