Diethyl succinate
[化] 丁二酸二乙酯
🧩 词语组成解析
a. [化]二乙基的
n. [化]琥珀酸盐(或酯)
🗣️ 情景例句
Yes, caring.
是的 ，关心。
Do we have to wear the helmets?
我们得戴上防护帽吗？
While John Gilbert was in hospital, he asked his doctor to tell him whether his operation had been successful,
当约翰。吉尔伯特住院的时候，他问医生他的手术是否成功，