Polycyclopentadiene
聚环戊二烯
🗣️ 情景例句
This must be Pete's barn.
这一定是Pete的粮仓了。
The spoon is dirty, Would you bring me a clean one, please?
这汤勺是脏的，请你拿个干净的给我。
He was in car number fifteen.Five other cars were just behind him.
他在第15号车里，其他5辆汽车跟在他后面。