Levul(in)ic acid
[化] 乙酰丙酸; 左旋酸
🧩 词语组成解析
🗣️ 情景例句
Robbie, you're something!
Robbie，你真是有骨气！
When an opportunity is neglected, it never comes back to you.
机不可失，时不再来。
This has not been easy because I own over a thousand books.
但这并不容易，因为我有1，000多本书。