Cycloalkene
[化] 环烯
🗣️ 情景例句
Too easy?
太简单？
When the accident happened, I was having dinner.
当意外事故发生时候，我在吃晚餐。
Here are the results. Girls' relay: The winners -- Class 4! (Hooray!)
获胜者--4班！（好！）