Piperidine
n. [化]哌啶,氮杂环己烷
🗣️ 情景例句
There are no dues.
不要会费。
She had to keep out of sight when her husband was holding a meet.
她在丈夫举行会议时只得避不露面。
Let's not waste our time.
咱们别浪费时间了。