Aceton
n. 丙酮
🗣️ 情景例句
I am speaking of people in general.
我所予的是一般人。
It is my pleasure to introduce the keynote speaker for today.
我很荣幸地介绍今天的主讲人。
These two have travelled through the earth.
这两种波都是穿过地球而来的。