Piperidinium
[化] 哌啶┹
🗣️ 情景例句
Richard and Marilyn bought it for me for my birthday.
这是Richard和Marilyn送给我的生日礼物。
Hi, thief! Would you stop that music for me?
喂，小偷兄，你能替我把音乐关掉吗？
He will soon visit Darwin.
他不久还将到达达尔文去，