Oxyacetone
羟丙酮
🗣️ 情景例句
What's the matter?
有什么事？
That work will take three hours.
完成那项工作需要三小时。
Oh, dear! said Miss Yang. Are you sure you've lost it?
“哎呀！”杨小姐说，“你肯定你弄丢了？”