Acetonization
[化] 丙酮化; 丙酮化作用
🗣️ 情景例句
I keep thinking about that bag of film. Eight rolls.
我一直在想着旅行袋的事。一共有八卷呢。
What were you doing at about 4 o'clock yesterday afternoon?
你昨天下午在大约4点钟正在做什么？
Before they were replaced by steamships,
在蒸汽船取代帆船之前。