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
have been busy at work this morning
一早上都在忙着
We can't fly our kites any more because the wind has stopped.
由于风静止，所以已经没法放风筝了。
It's used for cutting.
用于切割。