Piperidic acid
[化] γ-氨基丁酸
🧩 词语组成解析
🗣️ 情景例句
The other day he finally popped the question.
第二天他终于开口求婚了。
Will anyone be able to fill her shoes now that she's left the company?
既然她已经离开了公司，有人能接替她的位置吗？
Big Ben has rarely gone wrong.
“大本”钟极少出差错。