Polyacetylen
聚乙炔; 聚乙炔
🗣️ 情景例句
Have you talked to the community council?
你们跟社区的议会谈过了吗？
I'm a graduate of Yale University, I have a Bachelor of Science degree.
我是耶鲁大学的毕业生，我有理学学士学位。
What time did you have it?
你们什么时候开的会？