Pipecoline
2-甲基哌啶
🗣️ 情景例句
Why are you leaving your present job?
你为什么要放弃目前的工作？
It's a beautiful country with several chains of mountains.
这个国家很美，它有很多山脉。
Dropping my suit, I dashed downstairs to tell George.
我扔下西服冲下楼去告诉乔治。