Polycyclopentadiene
聚环戊二烯
🗣️ 情景例句
I'm going nowhere in my present job.
我现在的工作没有出路。
In the mirror we see the face; in wine, the heart.
明镜照容颜，醇酒见人心。
I feel rather ashamed.
我感到很不好意思。