Acetylamine
乙酰胺
??? 情景例句
When did you come here?
是什么時候來這兒的？
I'm not really sure about that. Mr. Jiang should know the answer to that.
關于那事我不敢確定，蔣先生應該知道答案。
but she was fast asleep,
但她睡得很熟。