Pennone
四甲基-2-戊酮
🗣️ 情景例句
I'm sorry, I spoke out of turn.
对不起，我说错话了。
Did you go to the school last night?
你昨晚去学校了吗？
These are partly a matter of personal circumstances, partly a matter of psychology.
这里一方面是个人所处的环境，另一方面是个心理学的问题。