Oxyacetone
羟丙酮
🗣️ 情景例句
Is this the bus that goes by the mall?
这班公共汽车经过商业街吗？
He's tired because he worked hard all day today.
他疲倦是因为他今天整天努力工作。
On the third lap, the Class 3 and Class 1 runners both ran very fast.
在跑第三圈时，3班和1班的运动员都跑得非常快。