Piperidine
n. [化]哌啶,氮杂环己烷
🗣️ 情景例句
You'd better watch your step or you'll get into trouble again.
你最好留点儿神， 免得再惹麻烦。
He was accustomed to poor food.
他习惯于粗茶淡饭。
Look at your clothes! Where have you been?
瞧你们的衣服！你们去哪儿了？