Pipecolinic acid
[化] 2-哌啶酸
🧩 词语组成解析
🗣️ 情景例句
Yes, here are some catalogs and brochures.
有的，这里是一些目录和小册子。
What the hell are you doing?
你到底在做什么？
In the evening, the children come home from school.They arrive home early.
傍晚，孩子们放学回家。他们到家很早。