Piperidine
n. [化]哌啶,氮杂环己烷
🗣️ 情景例句
Well, I know you and Mom have given up a lot
嗯， 我知道你和妈妈省吃俭用
My brother took a trip to Mexico.
我的兄弟到墨西哥旅行了。
He had been obliged to join the army during the Second World War.
年龄比他两个弟弟大很多，第二次世界大战期间被迫参军。