Propione
[化] 3-戊酮
🗣️ 情景例句
Thank you. I don't believe this.
谢谢。我简直不敢相信。
Why Mr. Cooper so tired?Do you have any idea?
为什么库珀先生这样疲倦的?你有想法吗？
Not to grasp firmly is not to grasp at all.
抓而不紧等于不抓。