Polycyclopentadiene
聚环戊二烯
🗣️ 情景例句
Study hard kids, your mother and I want you to get into a good college when the time comes.
努力学习，孩子们，你们的妈妈和我希望你们能考上名校。
He that returns good for evil obtains the victory.
以德报怨的人得到胜利。
Yes, sir?
什么事，先生。