Diethyl maleic acid
[化] 二乙基马来酸
🧩 词语组成解析
a. [化]二乙基的
n. 顺丁烯
🗣️ 情景例句
Thank you.
谢谢。
Yes, I guess that would be all right.
行，我想没问题。
She entered the station twenty minutes before the train was due,
在火车进站20分钟前她就进了车站。