Propylaldehyde
丙醛
🗣️ 情景例句
I love parades.
我爱看游行。
The teacher was not at all happy with his students.
那位老师对他的学生毫不满意。
I'm sorry I don't know. You'd better ask that policeman over there.
对不起，我不知道。你最好问问那边的警察。