Piperidine
n. [化]哌啶,氮杂环己烷
🗣️ 情景例句
Excuse me.
请原谅。
Oh, I'm just going to take it easy.
哦，我只想休息休息。
Good morning. I am. Everyone is here. No one is away.
早上好。我值日。大家都来了。没有人缺席。