Diacetone
双丙酮, 乙酰丙酮
🗣️ 情景例句
If you don't like it, I whis you would say so.
如果你不喜欢，我希望你能说出来。
What brings you to Beijing?
什么风把你吹到北京来的？
'Good heavens!' exclaimed his wife.
“天啊！”他的夫人惊叫，