Piperazidine
[化] 哌嗪
🗣️ 情景例句
Are you sure you know where you're going?
你真认识你要去的地方吗？
Oh, it's a shame that you have to leave.
哦，真遗憾，你非走不可呀。
'I left the money in my room,' I said, 'and it's not there now.
“我把钱放在房间里，”我说，“可现在没有了。