Vinylation
乙烯化作用
🗣️ 情景例句
I had a busy day. I'm done.
我今天很忙，现在精疲力尽。
Miss Judy Levine comes from the University of Wisconsin.
朱迪.莱雯小姐来自威斯康星大学。
What colour is it?
什么颜色的？