Phthalidene-
[化] 2-苯并[c]呋喃酮亚基
🧩 词语组成解析
2-苯并[C]呋喃酮基
🗣️ 情景例句
I like to study in the library because it's so quiet.
我喜欢在图书馆学习因为那儿很安静。
I meet the boy whose aunt is an accountant.
我遇到那个男孩的姑妈是会计。
There were twenty cars in the race.
参加比赛的有20辆汽车。