Piperidine
n. [化]哌啶,氮杂环己烷
🗣️ 情景例句
since this is so easy ....
既然那么简单……
Let's give him a big hand.
让我们热烈鼓掌。
My dentist had just pulled out one of my teeth and had told me to rest for a while.
我的牙科医生刚刚给我拔掉了一颗牙，叫我休息一会儿。