Piperidine
n. [化]哌啶,氮杂环己烷
🗣️ 情景例句
Susan, will you marry me?
Susan，你愿意嫁给我吗？
Do you have any brothers or sisters?
你有兄弟或姐妹吗？
Goats are also kept. Apart from their milk, the wool from their coats is used in expensive clothing.
除了获取羊奶之外，从羊皮上剪下的羊毛还用来制作昂贵的服装。