Formyl piperidine
[医] 甲酰哌啶, 甲酰氮杂环己烷
🧩 词语组成解析
n. [化]甲酸基
n. [化]哌啶,氮杂环己烷
🗣️ 情景例句
Why does he want to do that?
为什么他要那么做呢？
Sorry, I guess I wasn't thinking. I won't do it again.
对不起。我对这事没想过，下次不这样了。
What happened before printing was invented?
印刷术发明以前是怎么一回事？