Pinalic acid
[化] 戊酸
🧩 词语组成解析
🗣️ 情景例句
You seem to have some reservations.
看起来你还有些犹豫。
How long will you remain in the hospital?
你将会在医院逗留多久？
Yes, It was a real pity!
可不是，太可惜了。