Diazetine
二氮杂环丁烯
🗣️ 情景例句
the copy of Richard's book on my desk?
在我桌上那本Richard的书 好吗
The restaurant is upstairs.
那餐厅在楼上。
Yes, that's right. It's just had a baby!
是的，这就对了。它刚生了个孩子。