Piperidic acid
[化] γ-氨基丁酸
🧩 词语组成解析
🗣️ 情景例句
The minister has indicated that he may resign next year.
该大臣已经示意他明年可能会辞职。
I ought to write a letter.
我应该写一封信。
If no other sate water supply can be obtained,
如果没有其他安全的饮用水，