Levul(in)ic acid
[化] 乙酰丙酸; 左旋酸
🧩 词语组成解析
🗣️ 情景例句
What was your graduation thesis on?
你毕业论文是什么题目？
She began playing the violin when she was nine.
九岁的时候，她开始拉小提琴。
The doctor began to operate on the boy.
医生开始给那个男孩动手术。